Engine Control - Self-Diagnostics
- Introduction
- Diagnostic Trouble Codes
- Component Identification
- System Tests
- *Read This First*
- Diagnostic Trouble Code Definitions
- DTC P0107-A: Map Sensor Voltage Too Low
- DTC P0108-A: Map Sensor Voltage Too High
- DTC P0112-A: Intake Air Temp Sensor Voltage Low
- DTC P0113-A: Intake Air Temp Sensor Voltage High
- DTC P0117-A: ECT Sensor Voltage Too Low
- DTC P0118-A: ECT Sensor Voltage Too High
- DTC P0121-A: TPS Voltage Does Not Agree With Map
- DTC P0122-A: Throttle Position Sensor Voltage Low
- DTC P0123-A: Throttle Position Sensor Voltage High
- DTC P0125-A: Closed Loop Temp Not Reached
- DTC P0131-A: 1/1 O2 Sensor Shorted To Ground
- DTC P0132-A: 1/1 O2 Sensor Shorted To Voltage
- DTC P0132-B: 1/1 O2 Sensor Shorted To Voltage
- DTC P0132-C: 1/1 O2 Sensor Shorted To Voltage
- DTC P0133-A: 1/1 O2 Sensor Slow Response
- DTC P0135-A: 1/1 O2 Sensor Heater Failure
- DTC P0135-B: 1/1 O2 Sensor Heater Failure
- DTC P0137-A: 1/2 O2 Sensor Shorted To Ground
- DTC P0138-A: 1/2 O2 Sensor Shorted To Voltage
- DTC P0138-B: 1/2 O2 Sensor Shorted To Voltage
- DTC P0138-C: 1/2 O2 Sensor Shorted To Voltage
- DTC P0141-A: 1/2 O2 Sensor Heater Failure
- DTC P0141-B: 1/2 O2 Sensor Heater Failure
- DTC P0151-A: 2/1 O2 Sensor Shorted To Ground
- DTC P0152-A: 2/1 O2 Sensor Shorted To Voltage
- DTC P0152-B: 2/1 O2 Sensor Shorted To Voltage
- DTC P0152-C: 2/1 O2 Sensor Shorted To Voltage
- DTC P0153-A: 2/1 O2 Sensor Slow Response
- DTC P0155-A: 2/1 O2 Sensor Heater Failure
- DTC P0155-B: 2/1 O2 Sensor Heater Failure
- DTC P0157-A: 2/2 O2 Sensor Shorted To Ground
- DTC P0158-A: 2/2 O2 Sensor Shorted To Voltage
- DTC P0158-B: 2/2 O2 Sensor Shorted To Voltage
- DTC P0158-C: 2/2 O2 Sensor Shorted To Voltage
- DTC P0161-A: 2/2 O2 Sensor Heater Failure
- DTC P0161-B: 2/2 O2 Sensor Heater Failure
- DTC P0171-A: Fuel System 1/1 Lean
- DTC P0171-B: Fuel System 1/1 Lean
- DTC P0172-A: Fuel System 1/1 Rich
- DTC P0172-B: Fuel System 1/1 Rich
- DTC P0174-A: Fuel System 2/1 Lean
- DTC P0174-B: Fuel System 2/1 Lean
- DTC P0175-A: Fuel System 2/1 Rich
- DTC P0175-B: Fuel System 2/1 Rich
- DTC P0201-A: Injector No. 1 Control Circuit
- DTC P0202-A: Injector No. 2 Control Circuit
- DTC P0203-A: Injector No. 3 Control Circuit
- DTC P0204-A: Injector No. 4 Control Circuit
- DTC P0205-A: Injector No. 5 Control Circuit
- DTC P0206-A: Injector No. 6 Control Circuit
- DTC P0207-A: Injector No. 7 Control Circuit
- DTC P0208-A: Injector No. 8 Control Circuit
- DTC P0209-A: Injector No. 9 Control Circuit
- DTC P0210-A: Injector No. 10 Control Circuit
- DTC P0300-A: Multiple Cylinder Misfire
- DTC P0301-A: Cylinder No. 1 Misfire
- DTC P0302-A: Cylinder No. 2 Misfire
- DTC P0303-A: Cylinder No. 3 Misfire
- DTC P0304-A: Cylinder No. 4 Misfire
- DTC P0305-A: Cylinder No. 5 Misfire
- DTC P0306-A: Cylinder No. 6 Misfire
- DTC P0307-A: Cylinder No. 7 Misfire
- DTC P0308-A: Cylinder No. 8 Misfire
- DTC P0309-A: Cylinder No. 9 Misfire
- DTC P0310-A: Cylinder No. 10 Misfire
- DTC P0320-A: No Crank Reference Signal At Pcm
- DTC P0320-B: No Crank Reference Signal At Pcm
- DTC P0340-A: No Cam Signal At Pcm
- DTC P0340-B: No Cam Signal At Pcm
- DTC P0351-A: Ignition Coil No. 1 Primary Circuit
- DTC P0351-B: Ignition Coil No. 1 Primary Circuit
- DTC P0352-A: Ignition Coil No. 2 Primary Circuit
- DTC P0352-B: Ignition Coil No. 2 Primary Circuit
- DTC P0353-A: Ignition Coil No. 3 Primary Circuit
- DTC P0353-B: Ignition Coil No. 3 Primary Circuit
- DTC P0354-A: Ignition Coil No. 4 Primary Circuit
- DTC P0354-B: Ignition Coil No. 4 Primary Circuit
- DTC P0355-A: Ignition Coil No. 5 Primary Circuit
- DTC P0355-B: Ignition Coil No. 5 Primary Circuit
- DTC P0420-A: Catalyst 1/1 Efficiency Failure
- DTC P0432-A: Catalyst 2/1 Efficiency Failure
- DTC P0441-A: EVAP Purge Flow Monitor Failure
- DTC P0442-A: EVAP Leak Monitor Small (.040) Leak Detected
- DTC P0443-A: EVAP Purge Solenoid Circuit
- DTC P0455-A: EVAP Leak Monitor Large Leak Detected
- DTC P0460-A: Fuel Level Unit No Change Over Miles
- DTC P0461-A: Fuel Level Unit No Change Over Time
- DTC P0462-A: Fuel Level Sending Unit Volts Too Low
- DTC P0463-A: Fuel Level Sending Unit Volts Too High
- DTC P0500-A: No Vehicle Speed Sensor Signal
- DTC P0500-B: No Vehicle Speed Sensor Signal
- DTC P0500-C: No Vehicle Speed Sensor Signal
- DTC P0505-A: Idle Air Control Motor Circuits
- DTC P0505-B: Idle Air Control Motor Circuits
- DTC P0505-C: Idle Air Control Motor Circuits
- DTC P0505-D: Idle Air Control Motor Circuits
- DTC P0505-E: Idle Air Control Motor Circuits
- DTC P0622-A: Generator Field Not Switching Properly
- DTC P0645-A: A/C Clutch Relay Circuit
- DTC P0801-A: Reverse Gear Lock-Out Circuit Open Or Short
- DTC P1195-A: Slow 1/1 O2 Sensor During Catalyst Monitor
- DTC P1196-A: Slow 2/1 O2 Sensor During Catalyst Monitor
- DTC P1282-A: Fuel Pump Relay Control Circuit
- DTC P1294-A: Target Idle Not Reached
- DTC P1294-B: Target Idle Not Reached
- DTC P1296-A: No 5 Volts To Map Sensor
- DTC P1297-A: No Change In Map From Start To Run
- DTC P1388-A: Auto Shutdown Relay Control Circuit
- DTC P1389-A: No ASD Relay Output Voltage At Pcm
- DTC P1391-A: Intermittent Loss Of CMP Or CKP
- DTC P1398-A: Misfire Adaptive Numerator At Limit
- DTC P1486-A: EVAP Leak Monitor Pinched Hose Found
- DTC P1489-A: High Speed Fan Relay Circuit
- DTC P1490-A: Low Speed Fan Relay Circuit
- DTC P1492-A: Battery Temp Sensor (BTS) Voltage Too High
- DTC P1493-A: Battery Temp Sensor (BTS) Voltage Too Low
- DTC P1494-A: Leak Detection Pump SW Or Mechanical Fault
- DTC P1495-A: Leak Detection Pump Solenoid Circuit
- DTC P1594-A: Charging System Voltage Too High
- DTC P1594-B: Charging System Voltage Too High
- DTC P1682-A: Charging System Voltage Too Low
- DTC P1696-A: Pcm Failure EEPROM Write Denied
- DTC P1719-A: Skip Shift Solenoid Circuit
- No Trouble Code Tests
- Test NTC-1A: No Trouble Code Test Chart
- Test NTC-2A: Checking Secondary Ignition & Timing
- Test NTC-3A: Checking Pcm Power & Ground Circuits
- Test NTC-5A: Checking Fuel Delivery
- Test NTC-6A: Checking Coolant Sensor Calibration
- Test NTC-7A: Checking Throttle Position Sensor Calibration
- Test NTC-8A: Checking Map Sensor
- Test NTC-10A: Checking Oxygen Sensor Switching
- Test NTC-10B: Checking Oxygen Sensor Switching
- Test NTC-11A: Checking Oxygen Sensor Heater
- Test NTC-13A: Checking Engine Mechanical Systems
- Test NTC-15A: Checking Battery Temp Sensor (BTS)
- Test NTC-16A: Checking Brake Switch
- Test NTC-17A: Checking EVAP System
- Test NTC-19A: Checking Intake Air Temp Sensor
- Test NTC-26A: Checking A/C System
- Test NTC-27A: Checking Radiator Fan Operation
- Charging Tests
- No Start Tests
- Test NS-SEL: No Start Selection Menu
- Test NS-1A: Qualifying A No Start Condition
- Test NS-2A: Checking Fuel System
- Test NS-3A: Checking Mechanical System
- Test NS-4A: Repairing Low Fuel Pressure
- Test NS-5A: Checking Fuel Pump
- Test NS-6A: Repairing A "No Response" Condition
- Test NS-6B: Repairing A "No Response" Condition
- Test NS-6C: Repairing A "No Response" Condition
- Test NS-6D: Repairing A "No Response" Condition
- Test NS-8A: Repairing A Start & Stall Condition
- Test NS-9A: Repairing A No Crank Condition
- Verification Tests
- Wiring Diagrams