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Home >> Cadillac >> 1993 >> Seville Base >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Tests W/Codes - Pcm >> Self-Diagnostic System >> Displaying Trouble Codes

Displaying Trouble Codes

  1. Diagnostic code level displays PCM codes first, followed by IPC, ACP and SIR codes (if so prompted). Trouble codes appear in ascending (3-digit) numerical order and are prefixed by "P" (PCM), "I" (IPC), "A" (ACP) or "R". A final digit of either a "C" (current) or "H" (history)" will also be indicated on every code.
  2. For complete list of available PCM trouble codes, see PCM TROUBLE CODES table. If no codes are present for a system, a "NO X CODE" message (with X being system, i.e. "P", "I", etc.) will be displayed. If communication line to a component is not operating, a "NO X DATA" message will be displayed, indicating that IPC could not communicate with that system.
  3. To continue with system diagnostics, see SERVICE MODE OPERATION. To exit from SERVICE MODE and go back to normal vehicle operation, depress AUTO button on IPC.
PCM TROUBLE CODE DEFINITIONS

Code Test Condition
P012 (1) No Distributor (TACH) Signal
P013 (1)(5) Rear Oxygen Sensor Not Ready
P014 (1) Shorted Coolant Sensor Signal
P015 (1) Open Coolant Sensor Signal
P016 (2) Alternator Voltage Out Of Range
P017 (1) Front Oxygen Sensor Not Ready
P019 (2) Shorted Fuel Pump Feedback Signal
P020 (2) Open Fuel Pump Circuit
P021 (1) Shorted TP Sensor Circuit (Signal Voltage High)
P022 (1) Open TP Sensor Circuit (Signal Voltage Low)
P023 (1) Ignition Control Circuit Problem
P024 (1)(6) Vehicle Speed Sensor (VSS) Circuit Problem
P025 (2) 24X Reference Signal Low
P026 (1) Shorted Throttle Switch Circuit
P027 (1) Open Throttle Switch Signal
P028 (1) Transaxle Pressure Switch/Circuit Problem
P029 (1) Transaxle Shift "B" Solenoid Problem
P030 (1) ISC RPM Out Of Range
P031 (1) Shorted MAP Sensor Circuit
P032 (1) Open MAP Sensor Circuit
P033 (2) Extended Travel Brake Switch Input Circuit Problem
P034 (1) MAP Sensor Signal Too High
P035 (3) Ignition Ground Voltage Out Of Range
P036 (1) Exhaust Gas Recirculation (EGR) Valve Pintle Position Out Of Range
P037 (1) Shorted Intake Air Temp (IAT) Sensor Signal
P038 (1) Open Intake Air Temp (IAT) Sensor Signal
P039 (1)(4) TCC Engagement Problem
P040 (1) Open PSPS Circuit
P041 (1) No CAM Sensor Signal
P042 (1)(5) Front Oxygen Sensor Lean Signal
P043 (1)(5) Front Oxygen Sensor Rich Signal
P044 (1)(5) Rear Oxygen Sensor Lean Signal
P045 (1)(5) Rear Oxygen Sensor Rich Signal
P046 (1) Front-To-Rear Bank Fueling Imbalance
P047 (1) IPC-To-PCM Data Problem
P048 (1) EGR System Fault
P051 (1) PROM Error
P052 (3) PCM Memory Reset
P053 (3) Distributor Signal Interrupt
P055 (3) TP Sensor Out Of Range
P056 (1) Transaxle Input Speed Sensor Circuit Problem
P058 (3) Pass-Key Fuel Enable Problem
P060 (3) Cruise Control With Transaxle Not In Drive
P061 (3) Cruise Control Vent Solenoid Problem
P062 (3) Cruise Control Vacuum Solenoid Problem
P063 (3) Vehicle Speed & Set Speed Difference Too High
P064 (3) Cruise Control Engaged/Acceleration Too High
P065 (3) Cruise Control Servo Position Sensor Failure
P066 (3) Engine RPM Too High With Cruise Engaged
P067 (3) Set/Coast Or Resume/Accel Switch Shorted
P068 (3)(6) Cruise Control Servo Position Out Of Range
P069 (7) Traction Control Active While In Cruise
P070 (3) Intermittent TP Sensor Signal
P071 (3) Intermittent MAP Sensor Signal
P073 (3) Intermittent Coolant Temp Sensor Signal
P074 (3) Intermittent Intake Air Temp Sensor Signal
P075 (3) VSS Signal Interrupt
P076 (1) Transaxle Pressure Control Solenoid Circuit
P080 (1) Fuel System Rich
P081 (3) CAM To 4X Reference Correlation Problem
P083 (1) 24X Reference Signal High
P085 (1) Idle Throttle Angle Too High
P086 (1) Undefined Gear Ratio
P088 (1) Torque Converter Clutch (TCC) Not Disengaging
P089 (8) Long Shift And Maximum Adapt
P090 (2) TCC Brake Switch Input Problem
P091 (2) Transaxle Range Switch Problem
P092 (2) Heated Windshield Request Problem
P093 (9) Traction Control System Pwm Link Failure
P094 (1) Transaxle Shift 'A' Solenoid Problem
P095  Engine Stall Or Near Stall Detected
P096 (1) Torque Converter Overstress
P097 (3) Park/Neutral-To-Drive/Reverse Shift At High Throttle Angle
P098 (3) Park/Neutral-To-Drive/Reverse Shift While In ISC Control Range
P099 (3) Cruise Servo Applied Not In Cruise
P0102 (2) Shorted Brake Booster Vacuum (BBV) Sensor
P0103 (2) Open Brake Booster Vacuum (BBV) Sensor
P0105 (2) Brake Booster Vacuum (BBV) Too Low
P0106 (9) Stop Lamp Switch Input Circuit Problem
P0110 (10) Generator "L" Terminal Circuit Problem
P0112  EEPROM Failure
P0117 (1) Shift "A"/Shift "B" Solenoid Circuit Open Or Shorted
P0131  Active Knock Sensor Failure
P0132 (1) Knock Sensor Circuit Failure
P0137 (11) Loss Of ABS/TCS Data
(1) This fault turns on SERVICE ENGINE SOON light.
(2) This fault turns on SERVICE VEHICLE SOON message.
(3) This fault does not turn on any light or message.
(4) This fault disengages TCC for ignition cycle.
(5) This fault enables EVAP control solenoid.
(6) This fault disables cruise control for ignition cycle.
(7) PCM disables cruise control.
(8) Code sets, no service telltale.
(9) DIC message displayed "TRACTION DISABLED".
(10) DIC message displayed "BATTERY NO CHARGE".
(11) PCM sets all serial data from the Anti-Lock Brake Traction Control System to zero.