Identifing OBD-I equipped cars
Sold in the United States between ??? and January 1, 1996 were required to be OBD I equipped.
OPERATING ON-BOARD DIAGNOSTIC SYSTEM
To enter diagnostic mode: 1. Turn ignition "ON." 2. Depress the "OFF" and "WARMER" buttons on the Climate Control Center (CCC) simultaneously and hold until the segment check appears on the Instrument Panel Cluster (IPC).
TROUBLE CODE DISPLAY
After entering On-Board Diagnostics, a segment check is automatically performed and then any trouble code stored in computer memory will be displayed. Codes may be stored for the Powertrain Control Module (PCM), Instrument Panel Cluster (IPC), Air Conditioning Programer (ACP), Supplemental Inflatable Restraint (SIR) Traction Control System (TCS) or Road Sensing Suspension (RSS) systems.
Each trouble code consists of the system abbreviation: (E: Engine), (P: PCM), (I: IPC), (A: ACP), (R: SIR), (T: TCS), (S: RSS), a three digit code identifier, and the letter C or H. All codes for each system are displayed together, in the order of their three digit number (lowest first). The final digit of the code, a "C" or "H" is used to indicate whether the code is Current or History. A "C" means the fault was still present the last time the diagnostic test was run, while "H" means the failure was not present the last time the code was tested for.
If no codes are present for a system, a "NO X CODE" message (with "X" being the system i.e. E, I, A, R, T or S) will be displayed. If the communication line to a component is not operating, a "NO X DATA" message will be displayed, indicating that the IPC could not communicate with that system.
SELECTING THE SYSTEM
After trouble codes have been displayed, a specific vehicle system PCM, IPC, ACP, SIR, TCS, RSS may be selected for testing. The first available system will be automatically displayed (i.e. PCM?). While selecting the system to test, any of the following actions may be taken:
1. Depressing the "HI" button on the CCC will select the displayed system for testing. 2. Depressing the "LO" button on the CCC will display the next available system selection. This allows the display to be stepped through all system choices. This list of systems can be repeated following the end of the system list. 3. Depressing the "OFF" button the CCC will stop the system selection process and return the display to the beginning of the trouble code sequence.
SELECTING THE TEST TYPE
Having selected a system, the first available test type will be displayed (i.e. PCM DATA?, PCM CLEAR CODES?). While selecting a specific test type, any of the following actions may be taken:
1. Depressing the "HI" button on the CCC will select the displayed test type. At this point the first of several specific tests will appear. 2. Depressing the "LO" button on the CCC will display the next available test type for the selected system. This allows the display to be stepped through all available test type choices. This list of test types can be repeated following the display of the last test type. 3. Depressing the "OFF" button on the CCC will stop the test type selection process and return the display to the next available system selection.
CLEAR CODES
Selection of "CLEAR CODES?" test will result in the message "CODES CLEARED" being displayed along with the selected systems name. This message will appear for 3 seconds and then return to the next available test type.
EXITING DIAGNOSTIC MODE
To get out of the diagnostic mode anytime during the test, depress the "AUTO" or "DEFOG" button, or turn the ignition switch "OFF." Trouble codes are not erased if this is done prior to selecting "CODES CLEARED."
Customer Snapshot
DESCRIPTION The Northstar powertrain has an unique feature that allows a Powertrain Control Module (PCM) snapshot to be recorded without being in on-board diagnostics by simply pressing two buttons on the Climate Control Center (CCC). This feature, called Customer Snapshot, records a complete set of PCM data parameters and inputs when the "OFF" and "FRONT DEFROST" buttons on the CCC are pressed simultaneously.
Customer Snapshot only works when the vehicle is NOT in on-board diagnostics. This feature can be very useful when it is difficult to reproduce a condition. When this occurs, the owner or driver may be instructed to take a Customer Snapshot while the condition is present and return to the dealer for diagnosis when convenient.
ACTIVATING SNAPSHOT A Customer Snapshot may be taken anytime the ignition is on and the vehicle is not in on-board diagnostics. While this is true, pressing the "OFF" and "FRONT DEFROST" buttons simultaneously for one second will cause a snapshot to be taken and the "Service Engine Soon" Malfunction Indicator Lamp (MIL) to be turned "ON" for 2 seconds as confirmation that a snapshot was taken.
RETRIEVING SNAPSHOT DATA This data may be retrieved by entering diagnostics, selecting PCM SNAPSHOT and viewing the P001 SNAPSHOT (It will appear as a code snapshot with a code designation of P001, hence the P001 SNAPSHOT designation.). The Customer Snapshot data will be overwritten if another Customer Snapshot is taken or if a PCM snapshot is taken while in on-board diagnostics.
GM Diagnostic Trouble Code List
Body Control Module (BCM) Codes
Code Description B110 ....................................... Outside Air Temperature Circuit Problem B111 ..................................... A/C High Side Temperature Circuit Problem B112 ......................... A/C Low Side Temperature Circuit Problem [A/C Clutch] B113 ............................................ In-Car Temperature Circuit Problem B115 ........................................... Sunload Temperature Circuit Problem B119 ................................. Twilight Sentinel Photosensor Circuit Problem B120 ................................... Twilight Sentinel Delay Pot Circuit Problem B122 ........................................ Panel Lamp Dimming Pot Circuit Problem B124 .................................................. Speed Sensor Circuit Problem B127 .......................... PRNDL321 Sensor Circuit Problem [Park Brake Release] B132 ................................................... Oil Pressure Sensor Failure B332 .......................................... ABS/TCS Serial Communication Failure B333 ................................ Loss of Supplemental Inflatable Restraint Data B334 .................................. Loss of Electronic Control Module (ECM) Data B335 ................ Loss of Climate Control Driver Information Center (CCDIC) Data B336 .................................... Loss of Instrument Panel Cluster (IPC)Data B337 ................... Loss of Programmer Data [A/C Clutch, Parking Brake Release] B339 ..................................... Ride Control Serial Communication Failure B409 ....................................................... Charging System Failure B410 ....................................................... Charging System Problem B411 ......................................................... Battery Volts Too Low B412 ........................................................ Battery Volts Too High B420 ................................................... BCM Output Driver 1 Failure B421 ................................................... BCM Output Driver 2 Failure B440 .......................................................... Air Mix Door Problem B441 .......................................................... Cooling Fans Problem B446 ......................................... Low A/C Refrigerant Condition Warning B447 ....................... Very Low A/C Refrigerant Condition Warning [A/C Clutch] B448 ...................... Very Low A/C Refrigerant Pressure Condition [A/C Clutch] B449 ............................................ A/C High Side Temperature Too High B450 ..................................... Coolant Temperature Too High [A/C Clutch] B480 ......................... Loss of ABS/TCS Communication [Antilock Brake System] B481 ............................................. Antilock Brake System (ABS) Fault B483 ...................................... ABS/TCS Disabled [Antilock Brake System] B552 .................................................... BCM Memory Reset Indicator B556 .............................................................. BCM EEPROM Error L110 ........................................... LSP Communication Failure (Allante) L411 ................................. Lighting System Low Voltage Warning (Allante)
Instrument Panel Cluster (IPC) Codes
Code Description I022 .............................................. Panel Dimming Switch Pot Circuit I027 ........................................................ PRND321 switch failure I032 .......................................................... Loss of ABS/TCS Data I033 ................................ Loss of Supplemental Inflatable Restraint Data I034 ........................................ Loss of Powertrain Control Module Data I037 ...................................... Loss of Air Conditioning Programmer Data I039 .......................................... Loss of Road Sensing Suspension Data I041 ....................................................... Battery Voltage Too Low I042 ...................................................... Battery Voltage Too High I052 ....................................................... Keep Alive Memory Error I056 ......................................... Instrument Panel Cluster EEPROM Error
Antilock Brake System (ABS) Codes
Code Description T021 ................................................... RF Wheel Speed Sensor Fault T022 ......................................... RF Wheel Speed Sensor Frequency Error T023 ........................................ RF Wheel Speed Sensor Continuity Fault T025 ................................................... LF Wheel Speed Sensor Fault T026 ......................................... LF Wheel Speed Sensor Frequency Error T027 ........................................ LF Wheel Speed Sensor Continuity Fault T028 ............................................ Wheel Speed Sensor Frequency Error T031 ................................................... RR Wheel Speed Sensor Fault T032 ......................................... RR Wheel Speed Sensor Frequency Error T033 ........................................ RR Wheel Speed Sensor Continuity Fault T035 ................................................... LR Wheel Speed Sensor Fault T036 ......................................... LR Wheel Speed Sensor Frequency Error T037 ........................................ LR Wheel Speed Sensor Continuity Fault T041 ................................................... RF ABS Valve Solenoid Fault T044 ...................................................... RF TCS Pilot Valve Fault T045 ................................................... LF ABS Valve Solenoid Fault T048 ...................................................... LF TCS Pilot Valve Fault T051 ................................................... RR ABS Valve Solenoid Fault T055 ........................................... LR Valve Solenoid Valve Fault (TCS) T055 ................................... Rear Valve Solenoid Valve Fault (Non - TCS) T061 ...................................................... Motor Pump Circuit Fault T063 ............................................................. Valve Relay Fault T067 ...................................................... Brake Light Switch Fault T071 .......................... Electronic Brake and TCS (EBTCM/EBCM) Internal Fault T072 ........................................................ Serial Data Link Fault T073 .......................... PCM - EBTCM/EBCM Pulse Width Modulation Signal Fault T083 ......................................................... Brake Fluid Level Low
Supplemental Inflatable Restraint (SIR) Codes
Code Description R014 .......................................... Dual Pole Arming Sensor Disconnected R015 ................................... Passenger Initiator Circuit Resistance High R016 .................................... Passenger Initiator Circuit Resistance Low R017 .............................................. Passenger Initiator Circuit Open R018 ....................................... Discriminating Sensor Interconnect Open R019 ...................................... Passenger Initiator Circuit Voltage High R021 ...................................... Driver Initiator Circuit Resistance High R022 ....................................... Driver Initiator Circuit Resistance Low R023 ......................................... Driver Initiator Circuit Voltage High R024 ................................................. Initiator Circuit Voltage Low R025 ........................................... Initiator Circuit Short to Ignition R026 ................................................. Driver Initiator Circuit Open R028 ................................................ Current Sink Or Source Failure R031 .......................................... Driver Loop Energy Reserve Feed Open RO32 ............................................. Grounded 36VLR to Deployment Loop RO33 ....................................... Steering Diode Shorted in Arming Sensor R034 .................................... Dual Pole Arming Sensor Ignition Feed Open R035 ......................................... Discriminating Sensor Open or Missing R036 ....................................... Passenger Loop Energy Reserve Feed Open RO41 ....................................... Energy Reserve Voltage Charging Failure R042 ............................................... Loop Energy Reserve Voltage Low R043 ........................................................ Driver Source Feed Low R044 ..................................................... Passenger Source Feed Low R051 ........................................................ Frontal Crash Detected R052 ................................................................ Data Area Full R053 ............................................... Driver Side Low High Resistance R054 ............................................ Passenger Side Low High Resistance R055 .......................................................... DERM Incompatibility R061 ................................................. SIR Indicator Circuit Failure R062 ....................................... Redundant SIR Indicator Circuit Failure R071 ............................... Internal Diagnostic Energy Reserve Module Fault R075 ........................................................... Internal DERM Fault R081 .................................................... Driver Ignition Diode Open R082 ................................................. Passenger Ignition Diode Open R083 .................................................. Driver Reserve Diode Shorted R084 ............................................... Passenger Reserve Diode Shorted
Air Conditioning Programer (ACP) Codes
Code Description A010 ............................................ Outside Temperature Sensor Circuit A011 .......................................... High Side Temperature Sensor Circuit A012 ........................................... Low Side Temperature Sensor Circuit A013 ............................................. In-Car Temperature Sensor Circuit A015 ....................................................... Sun Load Sensor Circuit A037 ......................................... Loss of Instrument Panel Cluster Data A040 .......................................... Air Mix Valve (Door) Circuit Problem A046 ........................................................ Low Refrigerant Charge A047 ........................................................ Low Refrigerant Charge A048 ...................................................... Low Refrigerant Pressure A049 ........................................... HVAC - Coolant Temperature Too High A050 ........................................... HVAC - Coolant Temperature Too High A052 ....................................................... Keep alive memory error
Traction Control System (TCS) Codes
Code Description T021 ................................................... RF Wheel Speed Sensor Fault T022 ......................................... RF Wheel Speed Sensor Frequency Error T023 ........................................ RF Wheel Speed Sensor Continuity Fault T025 ................................................... LF Wheel Speed Sensor Fault T026 ......................................... LF Wheel Speed Sensor Frequency Error T027 ........................................ LF Wheel Speed Sensor Continuity Fault T028 ............................................ Wheel Speed Sensor Frequency Error T031 ................................................... RR Wheel Speed Sensor Fault T032 ......................................... RR Wheel Speed Sensor Frequency Error T033 ........................................ RR Wheel Speed Sensor Continuity Fault T035 ................................................... LR Wheel Speed Sensor Fault T036 ......................................... LR Wheel Speed Sensor Frequency Error T037 ........................................ LR Wheel Speed Sensor Continuity Fault T041 ................................................... RF ABS Valve Solenoid Fault T044 ...................................................... RF TCS Pilot Valve Fault T045 ................................................... LF ABS Valve Solenoid Fault T048 ...................................................... LF TCS Pilot Valve Fault T051 ................................................... RR ABS Valve Solenoid Fault T055 ........................................... LR Valve Solenoid Valve Fault (TCS) T061 ...................................................... Motor Pump Circuit Fault T063 ............................................................. Valve Relay Fault T067 ......................... Brake Light Switch Fault (TCS Equipped Vehicles Only) T071 .......................... Electronic Brake and TCS (EBTCM/EBCM) Internal Fault T072 ........................................................ Serial Data Link Fault T073 .......................... PCM - EBTCM/EBCM Pulse Width Modulation Signal Fault T083 ......................................................... Brake Fluid Level Low
Road Sensing Suspension (RSS) Codes
Code Description S010 .................................. Left Front Damper Solenoid Valve Short to B+ S011 ......................... Left Front Damper Solenoid Valve Short to Ground/Open S015 ................................. Right Front Damper Solenoid Valve Short to B+ S016 ........................ Right Front Damper Solenoid Valve Short to Ground/Open S020 ................................... Left Rear Damper Solenoid Valve Short to B+ S021 .......................... Left Rear Damper Solenoid Valve Short to Ground/Open S023............................ Left Rear damper solenoid short across load circuit S025 .................................. Right Rear Damper Solenoid Valve Short to B+ S026 ......................... Right Rear Damper Solenoid Valve Short to Ground/Open S027 .............................................. Right Rear Solenoid open circuit S030 ................................................ Speed Sensitive Steering Fault S035 ............................... Electronic Level Control Compressor Short to B+ S036 ...................... Electronic Level Control Compressor Short to Ground/Open S037 ............................ Electronic Level Control Exhaust Valve Short to B+ S038 ................... Electronic Level Control Exhaust Valve Short to Ground/Open S043 ............................................................ Speed Signal Fault S044 ..................................................... Lift or Dive Signal Fault S050 .......................................... Road Sensing Suspension Module Fault S055 .......................................... Resistor Module Short to Ground/Open S060 .............................................. Left Front Position Sensor Fault S061 ............................................. Right Front Position Sensor Fault S062 ............................................... Left Rear Position Sensor Fault S063 .............................................. Right Rear Position Sensor Fault S064 ........................................ Left Front Position Sensor Overcurrent S065 ....................................... Right Front Position Sensor Overcurrent S066 ......................................... Left Rear Position Sensor Overcurrent S067 ........................................ Right Rear Position Sensor Overcurrent S070 ................................................ Left Front Accelerometer Fault S071 ............................................... Right Front Accelerometer Fault S072 ................................................. Left Rear Accelerometer Fault S073 ................................................ Right Rear Accelerometer Fault S074 .......................................... Left Front Accelerometer Overcurrent S075 ......................................... Right Front Accelerometer Overcurrent S076 ........................................... Left Rear Accelerometer Overcurrent S077 .......................................... Right Rear Accelerometer Overcurrent
Powertrain Control Module (PCM) Codes (Engine/Transmission) Engine Control Module (ECM) Codes*
Code Description P000 (E000) ............................................. Cruise Servo Apply Problem P012 (E012) .................................................. No Distributor Signal P013 (E013) .......................................... Right Oxygen Sensor Not Ready P014 (E014) ............................................ Shorted Coolant Temp Sensor P015 (E015) ........................................ Open Coolant Temp Sensor Signal P016 (E016) ......................................... Voltage Out of Range [ALL SOL] P017 (E017) ........................................... Left Oxygen Sensor not ready P019 (E019) .............................................. Shorted Fuel Pump Circuit P020 (E020) ................................................. Open Fuel Pump Circuit P021 (E021) ............................................... Shorted TPS Signal [VCC] P022 (E022) .................................................. Open TPS Signal [VCC] P023 (E023) ..................... Electronic Spark Timing (EST) Signal problem [EGR] P024 (E024) ..................................... Vehicle Speed Sensor signal to TCC P025 (E025) .................. (Ignition Control Module) 24x Reference Low Indicator P026 (E026) ......................................... Shorted Throttle Signal Switch P027 (E027) ............................................ Open throttle signal switch P028 (E028) ......... Open 3rd or 4th Gear Shift Or Shorted 2-3 Shift Solenoid [VCC] P029 (E029) .............. Transaxle Shift 'B' solenoid problem (1st, 3rd, 4th gear) P030 (E030) ................................................... ISC RPM out of range P031 (E031) ..................................................... Shorted MAP Sensor P032 (E032) ................................................. Open MAP Sensor Signal P033 (E033) ............................................ Wheel speed sensors problem P034 (E034) ......................................... MAP Sensor Signal Out of Range P035 (E035) .......................... PCM reference low signal voltage Out of Range P036 (E036) ................................. EGR Valve Pintle Position Out of Range P037 (E037) .............................................. Shorted MAT Sensor Signal P038 (E038) ................................................. Open MAT Sensor Signal P039 (E039) ..... Torque Coverter Clutch/Viscous Converter Clutch Engagement Problem P040 (E040) .................................... Power steering Pressure switch open P041 (E041) ................... No Cam Reference Signal from Ignition Control Module P042 (E042) ......................................... Left Oxygen Sensor Signal Lean P043 (E043) ......................................... Left Oxygen Sensor Signal Rich P044 (E044) ........................................ Right Oxygen Sensor Signal Lean P045 (E045) ........................................ Right Oxygen Sensor Signal Rich P046 (E046) .................................. Right to Left Bank Fueling Difference P047 (E047) ................................................. IPC - PCM Data Problem P048 (E048) ......................... Exhaust Gas Recirculation (EGR) system Problem P049 (E049) .............................. Air Injection Reaction (AIR) System Fault P050 (E050) ........................................... Second Gear Circuit Pressure P051 (E051) .......................................................... MEM-CAL Error P052 (E052) ....................................................... PCM Memory Reset P053 (E053) ........................................... Distributor Signal Interrupt P055 (E055) ............................... Closed Throttle Angle Out of Range [TPS] P056 (E056) ........................................ Transmission Input Speed Sensor P057 (E057) .......... Shorted 4th Gear Switch Circuit Or Shorted 3-4 Shift Solenoid P058 (E058) ................................................ PASSKey Control Problem P059 (E059) ........................................ Transmission Input speed sensor P060 (E060) .......................................... Cruise-Transaxle Not in Drive P061 (E061) ......................................... Cruise - Vent Solenoid Problem P062 (E062) ....................................... Cruise - Vacuum Solenoid Problem P063 (E063) ....................................... Set Vs. Vehicle Speed Difference P064 (E064) ................................. Cruise - Vehicle Acceleration Too High P065 (E065) ................................................... Cruise - SPS Failure P066 (E066) .............................................. Cruise - RPM Out of Range P067 (E067) ........................................ Cruise Switch shorted at Enable P068 (E068) ............................ Cruise Command Problem (servo out of range) P069 (E069) ........................ Traction Control Active During Cruise Operation P070 (E070) ................................................ Intermittent TPS Signal P071 (E071) ................................................ Intermittent MAP Signal P072 (E072) ..................... MAP sensor signal change without TPS signal change P073 (E073) ..................................... Intermittent Coolant Sensor Signal P074 (E074) ................................................ Intermittent MAT Signal P075 (E075) ................................................ Intermittent VSS Signal P076 (E076) ......................................... Transmission Pressuse Solenoid P080 (E080) ....................................................... Fuel System Rich P081 (E081) ................................ CAM to 4X reference correlation problem P083 (E083) .................................. Crankshaft to Ignition Module Failure P085 (E085) ........................................... Idle Throttle Angle Too High P086 (E086) ................... Undefined Gear Ratio (Transmission Pressure Control) P088 (E088) .... Torque converter clutch did not disengage when commanded OFF by PCM P089 (E089) ................. Long Shift and Maximum Adapt (Trans. Pressure Control) P090 (E090) ......... VCC/TCC Brake Switch/Park/neutral switch Input Circuit Problem P091 (E091) .................. PRNDL Switch Problem (transaxle range switch problem) P092 (E092) ...................................... Heated Windshield Request Problem P092 (E092) ............................... Traction Control System PWM Link Failure P093 (E093) ............... Traction control system signals were not received by PCM P094 (E094) ............ Transaxle Shift "A" Solenoid Problem (Vehicle Speed Sensor) P095 (E095) .................................................. Engine Stall Detected P096 (E096) ............................................ Torque Converter Overstress P097 (E097) .............................................. High RPM P/N to D/R Shift P098 (E098) .................................... High RPM P/N to D/R Shift Under ISC P099 (E099) ............................ Cruise Control Servo Applied, Not in Cruise P102 (E102) .............................. Shorted brake Booster Vacuum (BBV) Sensor P103 (E100) ....................................... Open Brake Booster Vacuum Sensor P105 (E105) ........................................... Brake Booster Vacuum Too Low P106 (E106) ........... Sudden vehicle deceleration w/o brake switch being activated P107 (E107) .............................................. PCM/BCM Data Link Problem P108 (E108) ............................................................. PROM error P109 (E109) ....... Keep Alive Memory (KAM) Reset/PCM has lost primary battery power P110 (E110) ................................... Generator L-terminal Circuit Problem P112 (E112) ................................................... PCM PROM EPROM error P117 (E117) .................... Open/Short Solenoids/Solenoid Wiring (Transmission) P119 (E119) .......................................... Open or Shorted Fuel Injector P120 (E120) ................................ A/C low side temperature sensor problem P121 (E121) ............................... A/C high side temperature sensor problem P122 (E122) .................. A/C coolant temperature sensor signal voltage problem P123 (E123) ................................... A/C refrigerant pressure was too low P124 (E124) ............ A/C compressor circuit was shorted (ON) w/o request by HVAC P125 (E125) ............. A/C high pressure switch/A/C high side temperature problem P126 (E126) ....................... A/C high pressure switch disabled A/C compressor P128 (E128) .................. A/C was disabled because of high refrigerant pressure P131 (E131) .................................. No signal from the knock sensor (PCM) P132 (E132) ......................................... Knock Sensor Circuitry Failure P133 (E133) ........................................ Loss of ABS communications/data P134 (E134) ............................ Loss of IPC (instrument panel cluster) data P135 (E135) ...................................................... Loss of HVAC data P136 (E136) ................... Loss of DERM (diagnostic energy reserve module) data P137 (E137) ............................. Loss of TCS (traction control system) Data
(*) for the model years prior to 1993, the "P###" (Powertrain) is replaced by an "E####" (Engine), but the description remains unchanged.
PCM Data Displays DESCRIPTION
The Powertrain Control Module (PCM) Data selection allows viewing of inputs the PCM uses to control powertrain functions. Each data parameter is displayed on the Driver Information Center (DIC) in appropriate units. The values displayed are non-fail safe.
PD01 (ED01) TPS (Throttle Position Sensor) in degrees PD02 (ED02) Manifold Absolute Pressure Sensor in Kilo Pascals (kPa) PD03 (ED03) Barometric Pressure in kPa PD04 (ED04) Engine Coolant Temperature (ECT) sensor in degrees Celsius PD05 (ED05) Intake Air Temperature (IAT) sensor in degrees Celsius PD07 (ED07) EGR Pintle Position PD08 (ED08) Spark Advance in degrees Before Top Dead Center (BTDC) PD09 (ED09) Ignition Ground Voltage PD10 (ED10) Fuel Pump Feedback Voltage (battery voltage) PD11 (ED11) Engine Speed in revolutions per minute (rpm) PD12 (ED12) Vehicle Speed in miles per hour (mph) PD13 (ED13) Pintle Position PD15 (ED15) Ignition 1 Voltage PD16 (ED16) PCM Output Fault Status A PD17 (ED17) PCM Output Fault Status B PD19 (ED19) Power Steering Sensor (kPa) PD30 (ED30) Front Bank Injector Pulse Width in milliseconds (ms) PD31 (ED31) Rear Bank Injector Pulse Width in milliseconds (ms) PD32 (ED32) Front Oxygen Sensor Voltage PD33 (ED33) Rear Oxygen Sensor Voltage PD34 (ED34) Front Oxygen Sensor Cross Counts (per second) PD35 (ED35) Rear Oxygen Sensor Cross Counts (per second) PD36 (ED36) Front Short Term Fuel Trim PD37 (ED37) Rear Short Term Fuel Trim PD38 (ED38) Front Long Term Fuel Trim PD39 (ED39) Rear Long Term Fuel Trim PD40 (ED40) Knock Sensor Spark Retard in degrees PD41 (ED41) Knock Sensor PD42 (ED42) Octane Level of Fuel will display 0, 87, 90, or 93 PD69 (ED69) Cruise Lash PD70 (ED70) Cruise Control Feedback (percent) PD71 (ED71) Transaxle Pressure Switch (PRNDL Code) PD72 (ED72) Transaxle Input Speed in rpm (PRNDL P/N Sw) PD73 (ED73) Torque Converter Slip Speed in rpm PD74 (ED74) TPC Solenoid Current PD75 (ED75) Current ER PD76 (ED76) Transaxle Gear Ratio PD77 (ED77) Transaxle Oil Temperature in degrees Celsius PD78 (ED78) Transaxle Shift Adapt in pounds per square inch (psi) PD80 (ED80) Transaxle Garage Shift Adapt in seconds PD81 (ED81) Torque Converter Clutch (TCC) Solenoid Duty Cycle in percent PD82 (ED82) Transaxle Shift Time in seconds PD83 (ED83) Non-drive Wheel Speed in kph PD84 (ED84) Brake Booster Vacuum in kPa PD97 (ED97) PROM Calibration-Transaxle PD98 (ED98) Ignition Cycles (key cycles on/off) PD99 (ED99) PROM Calibration-Engine
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