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P012 No Distributor Reference Signal
P013 Rear Oxygen Sensor Not Ready
P014 Shorted Coolant Sensor
P015 Open Coolant Sensor
P016 Generator Voltage Out of Range
P017 Front Oxygen Sensor Not Ready
P019 Shorted Fuel Pump Circuit
P020 Open Fuel Pump Circuit
P021 Shorted Throttle Position Sensor
P022 Open Throttle Position Sensor
P023 Ignition Control Circuit Problem
P024 Speed Sensor Circuit Problem
P026 Shorted Throttle Switch Circuit
P027 Open Throttle Switch Signal
P030 ISC RPM Out Of Range
P031 Shorted MAP Sensor Signal
P032 Open MAP Sensor Signal
P034 MAP Sensor Signal Out Of Range
P037 Shorted MAT Sensor Signal
P038 Open IAT Sensor Signal
P039 TCC Engagement Problem
P040 Power Steering Pressure Switch Signal
P041 Cam Sensor Signal Problem
P042 Front Oxygen Sensor Signal Lean
P043 Front Oxygen Sensor Signal Lean
P044 Rear Oxygen Sensor Signal Lean
P045 Rear Oxygen Sensor Signal Rich
P046 Front to Rear Bank Fueling Difference
P047 PCM/IPC Data Problem
P048 EGR System Problem
P051 PROM Checksum Mismatch
P052 PCM Keep Alive Memory Reset
P053 Distributor Signal Interrupt
P055 Closed Throttle Angle Out of Range
P057 Shorted Transaxle Temp Sensor Circuit
P058 Pass Key Control Problem
P059 Open Transaxle Temp Sensor Circuit
P060 Cruise - Not In Drive
P061 Cruise - Vent Solenoid Problem
P062 Cruise - Vacuum Solenoid Problem
P063 Cruise - Set Speed vs Vehicle Speed
P064 Cruise - Acceleration Too High
P065 Cruise - Servo Position Signal Problem
P066 Cruise - Engine RPM Too High
P067 Cruise - Switch Shorted
P068 Cruise - Command Problem
P070 Intermittent TPS
P071 Intermittent MAP
P073 Intermittent Coolant Sensor
P074 Intermittent IAT Sensor Signal
P075 Intermittent VSS Signal
P085 Idle Throttle Angle Too High
P090 Cruise - VCC Brake Switch Signal Problem
P091 Cruise - PRNDL Switch Problem
P092 Heated Windshield Request Problem
P096 Torque Converter Overstress
P097 P/N To D/R Engagement Problem
P098 P/N To D/R ISC Engaged Problem
P099 Cruise - Servo Apply Problem

To extract a trouble from the computer for diagnostic purposes, the Assembly Line Communication Link (ALDL) connector is used.

Ground terminals A and B with the ignition "ON" and engine not running. The system will enter the diagnostic mode. In this mode, the computer will display a 12, three consecutive times, by flashing the "CHECK ENGINE", "SERVICE ENGINE SOON" or "MALFUNCTION INDICATOR LAMP" or light. A 12 consists of one flash, a short pause, then two flashes in rapid succession.

After 12 is displayed, any stored trouble s will be displayed by flashing the "CHECK ENGINE", "SERVICE ENGINE SOON" or "MALFUNCTION INDICATOR LAMP" light. All s are displayed 3 times each then a 12 will repeat. In the diagnostic mode, the computer will also energize all computer controlled relays and solenoids.

The ALDL diagnostic connector is located in the passenger compartment.

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