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 1993 Allante DIC Codes & Table of Abbreviations 

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Click on titles below for Table of Codes & Definitions. Click title again to close Table.

PCM Diagnostic Codes

CODE DESCRIPTION COMMENT
P012 No 4X Reference Signal From Ignition Control Module Turns On "SERVICE ENGINE SOON" Malfunction Indicator Lamp
P013 Rear Heated Oxygen Sensor Not Ready Turns On "SERVICE ENGINE SOON" Malfunction Indicator Lamp
P014 Shorted Engine Coolant Temperature Sensor Turns On "SERVICE ENGINE SOON" Malfunction Indicator Lamp
P015 Open Engine Coolant Temperature Sensor Turns On "SERVICE ENGINE SOON" Malfunction Indicator Lamp
P016 Generator Voltage Out Of Range [EECS, ERG, CRUISE, TCC, Transaxle Pressure Control, Block Learn Turns On "SERVICE ENGINE SOON" Malfunction Indicator Lamp
P017 Front Heated Oxygen Sensor Not Ready Turns On "SERVICE ENGINE SOON" Malfunction Indicator Lamp
P019 Shorted Fuel Pump Circuit Displays "SERVICE ENGINE SOON" Message on CCDIC
P020 Open Fuel Pump Circuit Displays "SERVICE ENGINE SOON" Message on CCDIC
P021 Shorted Throttle Position 'Sensor [TCC, Transaxle Pressure Control Turns On "SERVICE ENGINE SOON" Malfunction Indicator Lamp
P022 Open Throttle Position Sensor [TCC, EGR] Turns On "SERVICE ENGINE SOON" Malfunction Indicator Lamp
P023 Ignition Control Circuit Problem [Ignition Control] Turns On "SERVICE ENGINE SOON" Malfunction Indicator Lamp
P024 Vehicle Speed Sensor Circuit Problem [TCC] Turns On "SERVICE ENGINE SOON" Malfunction Indicator Lamp
Disables Cruise Control for Entire Ignition Cycle
P025 24X Reference Signal Low Displays "SERVICE ENGINE SOON" Message on CCDIC
P026 Shorted Throttle Position Switch Circuit [EGR] Turns On "SERVICE ENGINE SOON" Malfunction Indicator Lamp
P027 Open Throttle Position Switch Circuit [EGR] Turns On "SERVICE ENGINE SOON" Malfunction Indicator Lamp
P028 Transaxle Pressure Switch/Circuit Problem Turns On "SERVICE ENGINE SOON" Malfunction Indicator Lamp
P029 Transaxle Shift 'B' Solenoid Problem [1st, 3rd, 4th Gear] Turns On "SERVICE ENGINE SOON" Malfunction Indicator Lamp
P030 Idle Speed Control (ISC) RPM Out Of Range Turns On "SERVICE ENGINE SOON" Malfunction Indicator Lamp
P031 Shorted Manifold Absolute Pressure (MAP) Sensor [Block Learn] Turns On "SERVICE ENGINE SOON" Malfunction Indicator Lamp
P032 Open Manifold Absolute Pressure (MAP) Sensor [Block Learn] Turns On "SERVICE ENGINE SOON" Malfunction Indicator Lamp
P033 Extended Travel Brake Switch Input Circuit Problem [Cruise] Displays "SERVICE ENGINE SOON" Message on CCDIC
P034 Manifold Absolute Pressure (MAP) Signal Too High [Block Learn] Turns On "SERVICE ENGINE SOON" Malfunction Indicator Lamp
P035 Ignition Ground Voltage Out of Range Does Not Turn On Any Telltale Light Or Display Any Message
P036 Exhaust Gas Recirculation (ERG) Solenoid Pintle Position Out Of Range [ERG] Turns On "SERVICE ENGINE SOON" Malfunction Indicator Lamp
P037 Shorted Intake Air Temperature (IAT) Sensor Turns On "SERVICE ENGINE SOON" Malfunction Indicator Lamp
P038 Open Intake Air Temperature (IAT) Sensor Turns On "SERVICE ENGINE SOON" Malfunction Indicator Lamp
P039 Torque Converter Clutch (TCC) Engagement Problem [4th Gear, TCC for Ignition Cycle] Turns On "SERVICE ENGINE SOON" Malfunction Indicator Lamp
P040 Power Steering Pressure Switch Open Displays "SERVICE VEHICLE SOON" Message on CCDIC
P041 No Cam Reference Signal From Ignition Control Module Turns On "SERVICE ENGINE SOON" Malfunction Indicator Lamp
P042 Front Heated Oxygen Sensor Lean Exhaust Signal Turns On "SERVICE ENGINE SOON" Malfunction Indicator Lamp
P043 Front Heated Oxygen Sensor Rich Exhaust Signal Turns On "SERVICE ENGINE SOON" Malfunction Indicator Lamp
P044 Rear Heated Oxygen Sensor Lean Exhaust Signal Turns On "SERVICE ENGINE SOON" Malfunction Indicator Lamp
P045 Rear Heated Oxygen Sensor Rich Exhaust Signal Turns On "SERVICE ENGINE SOON" Malfunction Indicator Lamp
P046 Left To Right Bank Fueling Difference Turns On "SERVICE ENGINE SOON" Malfunction Indicator Lamp
P047 PCM/BCM Data Link Problem Displays "SERVICE ENGINE SOON" Message On CCDIC
P048 Exhaust Gas Recirculation (ERG) System Malfunction [ERG] Turns On "SERVICE ENGINE SOON" Malfunction Indicator Lamp
P051 EPROM Checksum Mismatch Turns On "SERVICE ENGINE SOON" Malfunction Indicator Lamp
P052 PCM Keep Alive Memory Reset Does Not Turn On Any Telltale Light Or Display Any Message
P053 4X Reference Signal Interrupt From Ignition Control Module Does Not Turn On Any Telltale Light Or Display Any Message
P055 Closed Throttle Angle Out-Of-Range [TP Sensor Learn] Turns On "SERVICE ENGINE SOON" Malfunction Indicator Lamp
P056 Transaxle Speed Sensor Circuit Problem Turns On "SERVICE ENGINE SOON" Malfunction Indicator Lamp
P057 Shorted Transaxle Temperature Sensor Circuit Displays "SERVICE ENGINE SOON" Message On CCDIC
P058 PASSKey Fuel Enable Problem [PASSKey Fuel Inhibit] Displays Status Message On DIC
P059 Open Transaxle Temperature Sensor Circuit Displays "SERVICE ENGINE SOON" Message On CCDIC
P060 Cruise Control - Transaxle Not In Drive [Cruise] Does Not Turn On Any Telltale Light Or Display Any Message
P061 Cruise Control - Vent Solenoid Problem [Cruise] Does Not Turn On Any Telltale Light Or Display Any Message
P062 Cruise Control - Vacuum Solenoid Problem [Cruise] Does Not Turn On Any Telltale Light Or Display Any Message
P063 Set vs Vehicle Speed Difference [Cruise] Does Not Turn On Any Telltale Light Or Display Any Message
P064 Vehicle Acceleration Too High [Cruise] Does Not Turn On Any Telltale Light Or Display Any Message
P065 Cruise Control Servo Position Sensor Failure [Cruise] Does Not Turn On Any Telltale Light Or Display Any Message
P066 Cruise Control - Engine RPM Too High [Cruise] Does Not Turn On Any Telltale Light Or Display Any Message
P067 Set/Coast Or Resume/Accel Input Shorted [Cruise] Does Not Turn On Any Telltale Light Or Display Any Message
P068 Cruise Control Servo Position Out Of Range [Cruise] Does Not Turn On Any Telltale Light Or Display Any Message
P069 Traction Control Active While In Cruise [Cruise] Does Not Turn On Any Telltale Light Or Display Any Message
P070 Intermittent Throttle Position (TP) Sensor Does Not Turn On Any Telltale Light Or Display Any Message
P071 Intermittent Manifold Absolute Pressure (MAP) Sensor Does Not Turn On Any Telltale Light Or Display Any Message
P073 Intermittent Engine Coolant Temperature Sensor Does Not Turn On Any Telltale Light Or Display Any Message
P074 Intermittent Intake Air Temperature (IAT) Sensor Does Not Turn On Any Telltale Light Or Display Any Message
P075 Vehicle Speed Sensor Signal Interrupt [TCC] Turns on "SERVICE ENGINE SOON" Malfunction Indicator Lamp
P076 Transaxle Pressure Control Solenoid Circuit Malfunction [Trans. Pressure Control] Turns on "SERVICE ENGINE SOON" Malfunction Indicator Lamp
P081 CAM To 4X Reference Correlation Problem Does Not Turn On Any Telltale Light Or Display Any Message
P083 24X Reference Signal High Turns on "SERVICE ENGINE SOON" Malfunction Indicator Lamp
P085 Idle Throttle Angle Too High Turns on "SERVICE ENGINE SOON" Malfunction Indicator Lamp
P086 Undefined Gear Ratio [Trans. Pressure Control] Turns on "SERVICE ENGINE SOON" Malfunction Indicator Lamp
P088 Torque Converter Clutch (TCC) Not Disengaging [Trans. Adapts] Turns on "SERVICE ENGINE SOON" Malfunction Indicator Lamp
P089 Long Shift and Maximum Adapt [Trans. Pressure Control] Turns on "SERVICE ENGINE SOON" Malfunction Indicator Lamp
P090 TCC Brake Switch Input Circuit Problem [Cruise] Displays Status Message On DIC
P091 Transaxle Range Switch Problme [Cruise] Displays "SERVICE ENGINE SOON" Message On CCDIC
P093 Traction Control System PWM Link Failure Displays Status Message On DIC
P094 Transaxle Shift 'A' Solenoid Problem [1st, 3rd, 4th Gear] Turns On "SERVICE ENGINE SOON" Malfunction Indicator Lamp
P095 Engine Stall Detected Does Not Turn On Any Telltale Light Or Display Any Message
P096 Torque Converter Overstress Turns On "SERVICE ENGINE SOON" Malfunction Indicator Lamp
P097 P/N To D/R At High Throttle Angle Displays Status Message On DIC
P099 Cruise Control Servo Applied Not In Cruise Displays Status Message On DIC
P102 Shorted Brake Booster Vacuum (BBV) Sensor [EECS, EGR, Cruise, TCC, Block Learn, Transaxle Adapts] Displays "SERVICE ENGINE SOON" Message On CCDIC
P103 Open Brake Booster Vacuum (BBV) Sensor [EECS, EGR, Cruise, TCC, Block Learn, Transaxle Adapts] Displays "SERVICE ENGINE SOON" Message On CCDIC
P105 Brake Booster Vacuum (BBV) Too Low Displays "SERVICE ENGINE SOON" Message On CCDIC
P106 Stop Lamp Switch Input Circuit Problem Displays Status Message On DIC
P107 PCM/BCM Data Link Problem Does Not Turn On Any Telltale Light Or Display Any Message
P108 EPROM Checksum Mismatch Turns On "SERVICE ENGINE SOON" Malfunction Indicator Lamp
P109 PCM Keep Alive Memory Reset Does Not Turn On Any Telltale Light Or Display Any Message
P110 Generator L-Terminal Circuit Problem Displays Status Message On DIC
P112 Total EEPROM Failure Does Not Turn On Any Telltale Light Or Display Any Message
P117 Shift 'A'/Shift 'B' Circuit Output Open Or Shorted Turns On "SERVICE ENGINE SOON" Malfunction Indicator Lamp
P131 Active Knock Sensor Failure Does Not Turn On Any Telltale Light Or Display Any Message
P132 Knock Sensor Circuitry Failure Turns On "SERVICE ENGINE SOON" Malfunction Indicator Lamp
P137 Loss Of ABS/TCS Data Displays Status Message On DIC

BCM & Lighting Diagnostic Codes

CODE DESCRIPTION COMMENT
B110 Outside Air Temperature Circuit Problem Does Not Turn on Any Telltale Light Or Display Any Message
B111 A/C High Side Temperature Circuit Problem Does Not Turn on Any Telltale Light Or Display Any Message
B112 A/C Low Side Temperature Circuit Problem Does Not Turn on Any Telltale Light Or Display Any Message
B113 In-Car Temperature Circuit Problem Does Not Turn on Any Telltale Light Or Display Any Message
B115 Sunload Temperature Circuit Problem Does Not Turn on Any Telltale Light Or Display Any Message
B119 Twilight Sentinel Photosensor Circuit Problem Does Not Turn on Any Telltale Light Or Display Any Message
B120 Twilight Sentinel Delay Pot Circuit Problem Does Not Turn on Any Telltale Light Or Display Any Message
B122 Dimming Pot Failure Does Not Turn on Any Telltale Light Or Display Any Message
B132 Oil Pressure Sensor Failure Does Not Turn on Any Telltale Light Or Display Any Message
B332 ABS/TCS Serial Communication Failure Displays Status Message on DIC
Turns on Brake Telltale
B333 SIR Serial Communication Failure Displays Status Message on DIC
B334 PCM Serial Communication Failure Displays Status Message on DIC
B335 CCDIC Serial Communication Failure Displays Status Message on DIC
B336 IPC Serial Communication Failure Displays Status Message on DIC
B337 HVAC Serial Communication Failure Displays Status Message on DIC
B339 Ride Control Serial Communication Failure Displays Status Message on DIC
B410 Charging System Failure Displays Status Message on DIC
Illuminates "VOLTS" Telltale on IPC
B411 Battery Voltage Too Low Displays Status Message on DIC
B412 Battery Voltage Too High Displays Status Message on DIC
B440 Air Mix Problem Does Not Turn on Any Telltale Light Or Display Any Message
B446 Low A/C Refrigerant Condition Warning Displays Status Message on DIC
B446 Very Low A/C Refrigerant Condition Warning Displays Status Message on DIC
B448 Very Low A/C Refrigerant Pressure Condition Displays Status Message on DIC
B449 A/C High Side Temperature Too High Displays Status Message on DIC
B450 Coolant Temperature Too High Displays Status Message on DIC
Switches ECC Mode to ECON
B552 BCM Memory Reset Indicator Does Not Turn on Any Telltale Light Or Display Any Message
B556 BCM EEPROM Error Displays 'Error' in Season Odometer
L110 LSP Communication Failure Displays Status Message on DIC
L411 Lighting System Low Voltage Warning Displays Status Message on DIC

SIR Diagnostic Codes

CODE DESCRIPTION COMMENT
RO21 Steering Column Resistance Too High Turns on Supplemental Inflatable Restraint Telltale and Message
RO22 Steering Column Resistance Too Low Turns on Supplemental Inflatable Restraint Telltale and Message
RO23 Steering Column Voltage Too High Turns on Supplemental Inflatable Restraint Telltale and Message
RO24 Steering Column Voltage Too Low Turns on Supplemental Inflatable Restraint Telltale and Message
RO25 Short to Battery in Steering Column Turns on Supplemental Inflatable Restraint Telltale and Message
RO26 Open in Steering Column Turns on Supplemental Inflatable Restraint Telltale and Message
RO31 Open 36VLR to Deployment Loop Turns on Supplemental Inflatable Restraint Telltale and Message
RO32 Grounded 36VLR to Deployment Loop Turns on Supplemental Inflatable Restraint Telltale and Message
RO33 Steering Diode Shorted in Arming Sensor Does Not Turn On any Telltaile Light Or Display Any Message
RO34 Open in Ignition 1 Feed to Deployment Loop Turns on Supplemental Inflatable Restraint Telltale and Message
RO35 Discriminating Sensor Open Turns on Supplemental Inflatable Restraint Telltale and Message
RO41 Energy Reserve Voltage Charging Failure Turns on Supplemental Inflatable Restraint Telltale and Message
RO42 Energy Reserve Voltage Charging Voltage Too Low Turns on Supplemental Inflatable Restraint Telltale and Message
RO51 Accident Detected Turns on Supplemental Inflatable Restraint Telltale and Message
RO52 EEPROM Accident Data Area Full Turns on Supplemental Inflatable Restraint Telltale and Message
RO61 Force Low or Indicator Circuit Failure Turns on Supplemental Inflatable Restraint Telltale and Message
RO71 Internal Derm Fault Turns on Supplemental Inflatable Restraint Telltale and Message

TCS Diagnostic Codes

CODE DESCRIPTION COMMENT
T021 Right Front Wheel Speed Sensor Fault Turns on Brake Telltale
Displays Status Message On DIC
T023 Right Front Wheel Speed Sensor Continuity Fault Turns on Brake Telltale
Displays Status Message On DIC
T025 Left Front Wheel Speed Sensor Fault Turns on Brake Telltale
Displays Status Message On DIC
T027 Left Front Wheel Speed Sensor Continuity Fault Turns on Brake Telltale
Displays Status Message On DIC
T028 Wheel Speed Sensor Frequency Error Turns on Brake Telltale
Displays Status Message On DIC
T031 Right Rear Wheel Speed Sensor Fault Turns on Brake Telltale
Displays Status Message On DIC
T033 Right Rear Wheel Speed Sensor Continuity Fault Turns on Brake Telltale
Displays Status Message On DIC
T035 Left Rear Wheel Speed Sensor Fault Turns on Brake Telltale
Displays Status Message On DIC
T037 Left Rear Wheel Speed Sensor Continuity Fault Turns on Brake Telltale
Displays Status Message On DIC
T041 Right Front ABS Valve Solenoid Fault Turns on Brake Telltale
Displays Status Message On DIC
T041 Right Front ABS Valve Solenoid Fault Turns on Brake Telltale
Displays Status Message On DIC
T044 Right Front TCS Valve Solenoid Fault Turns on Brake Telltale
Displays Status Message On DIC
T045 Left Front ABS Valve Solenoid Fault Turns on Brake Telltale
Displays Status Message On DIC
T048 Left Front TCS Valve Solenoid Fault Turns on Brake Telltale
Displays Status Message On DIC
T051 Right Rear ABS Valve Solenoid Fault Turns on Brake Telltale
Displays Status Message On DIC
T055 Left Rear ABS Valve Solenoid Fault Turns on Brake Telltale
Displays Status Message On DIC
T061 Pump Motor or Pump Motor Relay Fault Turns on Brake Telltale
Displays Status Message On DIC
T063 Valve Relay Circuit Fault Turns on Brake Telltale
Displays Status Message On DIC
T067 Stop/BTSI/ Cruise Brake Switch Signal Fault Displays Status Message On DIC
T071 ABS/TCS Control Module Internal Fault Turns on Brake Telltale
Displays Status Message On DIC
T072 Serial Link Data Fault Turns on Brake Telltale
Displays Status Message On DIC
T073 PCM - TCS Interface Fault Displays Status Message On DIC
T083 Low Brake Fluid Turns on Brake Telltale
Displays Status Message On DIC

RTD Diagnostic Codes

CODE DESCRIPTION COMMENT
SO10 LF Damper Solenoid Short To B+ Displays Status Message on DIC
SO11 LF Damper Solenoid Short To Ground / Open Displays Status Message on DIC
SO15 RF Damper Solenoid Short To B+ Displays Status Message on DIC
SO16 RF Damper Solenoid Short To Ground / Open Displays Status Message on DIC
SO20 LR Damper Solenoid Short To B+ Displays Status Message on DIC
SO21 LR Damper Solenoid Short To Ground / Open Displays Status Message on DIC
SO25 RR Damper Solenoid Short To B+ Displays Status Message on DIC
SO26 RR Damper Solenoid Short To Ground / Open Displays Status Message on DIC
SO30 Speed Sensitive Steering Solenoid Fault Displays Status Message on DIC
SO43 Speed Signal Fault Displays Status Message on DIC
SO44 Lift/Dive Fault Does not turn on any Telltale Light or Display any Message
SO50 RSS Module Fault Displays Status Message on DIC
SO55 RSS Resistor Module Short to Ground / Open Displays Status Message on DIC
SO60 LF Position Sensor Fault Displays Status Message on DIC
SO61 RF Position Sensor Fault Displays Status Message on DIC
SO62 LR Position Sensor Fault Displays Status Message on DIC
SO63 RR Position Sensor Fault Displays Status Message on DIC
SO64 LF Position Sensor Overcurrent Does not turn on any Telltale Light or Display any Message
SO65 RF Position Sensor Overcurrent Does not turn on any Telltale Light or Display any Message
SO66 LR Position Sensor Overcurrent Does not turn on any Telltale Light or Display any Message
SO67 LR Position Sensor Overcurrent Does not turn on any Telltale Light or Display any Message
SO70 LF Accelerometer Fault Displays Status Message on DIC
SO71 RF Accelerometer Fault Displays Status Message on DIC
SO72 LR Accelerometer Fault Displays Status Message on DIC
SO73 RR Accelerometer Fault Displays Status Message on DIC
SO74 LF Accelerometer Overcurrent Does not turn on any Telltale Light or Display any Message
SO75 RF Accelerometer Overcurrent Does not turn on any Telltale Light or Display any Message
SO76 LR Accelerometer Overcurrent Does not turn on any Telltale Light or Display any Message
SO77 RR Accelerometer Overcurrent Does not turn on any Telltale Light or Display any Message


TABLE OF ABBREVIATIONS
ABS: Antilock Brake System LCD: Liquid Crystal Display
AIR: Air Injection System MAP: Manifold Absolute Pressure
BCM: Body Computer Module MIL: Malfunction Indicator Lamp
CCDIC: Climate Control/Driver Information Center ms: milliseconds
CCP: Climate Control Panel OSM: Output Switching Module
CL: Closed Loop PCM: Powertrain Control Module
DIC: Driver Information Center PROM: Programmable Read Only Memory
ECC: Electronic Climate Control RAP: Retained Accessory Power
EEPROM: Electronically Erasable Programmable Read Only Memory RTD: Real Time Dampening
ERG: Exhaust Gas Recirculation SIR: Supplemental Inflatable Restraint
IAT: Intake Air Temperature TCC: Torque Converter Clutch
IPC: Instrument Panel Cluster TCS: Traction Control System
ISC: Idle Speed Control TD: Theft Deterrent
kPa: kilopascals VF: Vacuum Flourescent

DIAGNOSTICS-BASIC OPERATION
  • Enter Diagnostics by simultaneously pressing ECCP 'OFF' and 'WARMER' buttons until all displays are lit.
  • Diagnostic code level displays PCM codes followed by BCM codes, Lighting/SIR/TCS/RTD codes
  • To proceed to the desired test level press and release the indicated button
  • Press 'OFF' to return to the next selection in the previous test level
  • Exit diagnostics by pressing 'RESET' on the Driver Information Console

CUSTOMER SNAPSHOT
When not in diagnostics, a snapshot of PCM data and inputs may be taken
by simultaneously pressing the 'OFF' and 'FRONT DEFOG' buttons on the
CCDIC. The 'SERVICE ENGINE SOON' MIL will be illuminated while the
'OFF' and 'FRONT DEFOG' buttons are held to confirm a snapshot has
been taken. After a customer snapshot is taken, the data may be retrieved
in PCM Snapshot and will be stored as a P001 Snapshot.

This page published by Rickko on 5/15/03. All information herein copied from the 1993 Cadillac Allante Vehicle Diagnostic System card, P/N: H-3043 16022.01-v. Copyright 1991 General Motors Corporation. All Rights Reserved. Cadillac Customer Satisfaction and the Cadillac Craftsman's League.