Section 20 (Engine Controls - Self-Diagnostics)
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2001 Saturn SW2, 2001 Saturn SL2, 2001 Saturn SL1, 2001 Saturn SL, and 2001 Saturn SC2. However, it is still accessible from the selected car via links, so may be relevant.
- Model Identification
- Introduction
- Self-Diagnostic System
- Programming
- Inspection/Maintenance Procedures
- Summary
- Diagnostic Trouble Code Definitions
- Diagnostic Tests
- Notes
- DTC P0037: Ho2S Heater Control Circuit Low
- DTC P0038: Ho2S Heater Control Circuit High
- DTC P0105: Map Sensor Circuit
- DTC P0107: Map Sensor Circuit - Low Voltage
- DTC P0108: Map Sensor Circuit - High Voltage
- DTC P0112: IAT Sensor Circuit - Low Voltage/High Temperature
- DTC P0113: IAT Sensor Circuit - High Voltage/Low Temperature
- DTC P0116: ECT Sensor Performance
- DTC P0117: ECT Sensor Circuit - Low Voltage/High Temperature
- DTC P0118: ECT Sensor Circuit - High Voltage/Low Temperature
- DTC P0122: TP Sensor Circuit - Low Voltage
- DTC P0123: TP Sensor Circuit - High Voltage
- DTC P0125: ECT Excessive Time To Enter Closed Loop Fuel Control
- DTC P0128: ECT Below Thermostat Regulating Temperature
- DTC P0130: Closed Loop Rationality
- DTC P0131: O2S1 Circuit - Low Voltage
- DTC P0132: O2S1 Circuit - High Voltage
- DTC P0133: O2S1 Circuit - Slow Response
- DTC P0134: O2S1 Circuit - Insufficient Activity
- DTC P0137: Ho2S2 Circuit - Low Voltage
- DTC P0138: Ho2S2 Circuit - High Voltage
- DTC P0140: Ho2S2 Circuit - Insufficient Activity
- DTC P0171: Fuel Trim System Lean
- DTC P0172: Fuel Trim System Rich
- DTC P0200: Injector Control Circuit
- DTC P0217: Engine Coolant OVERTEMPERATURE &/Or P0218: Transaxle Fluid OVERTEMPERATURE
- DTC P0231: Fuel Pump Relay Control Circuit - Low Voltage
- DTC P0232: Fuel Pump Relay Control Circuit - High Voltage
- DTC P0261: Injector No. 1 Control Circuit - Low Voltage
- DTC P0262: Injector No. 1 Control Circuit - High Voltage
- DTC P0264: Injector No. 2 Control Circuit - Low Voltage
- DTC P0265: Injector No. 2 Control Circuit - High Voltage
- DTC P0267: Injector No. 3 Control Circuit - Low Voltage
- DTC P0268: Injector No. 3 Control Circuit - High Voltage
- DTC P0270: Injector No. 4 Control Circuit - Low Voltage
- DTC P0271: Injector No. 4 Control Circuit - High Voltage
- DTC P0300: Engine Misfire Detected
- DTC P0324 Or P0325: Knock Sensor System
- DTC P0326: Knock Sensor System Performance
- DTC P0327: Knock Sensor Circuit - Low Input
- DTC P0336: Crankshaft Position (CKP) Sensor Circuit Performance
- DTC P0340: Cam Sensor Circuit
- DTC P0341: Cam Sensor Circuit Performance
- DTC P0351: Ignition Control Cylinder No. 1 & 4 Circuit
- DTC P0352: Ignition Control Cylinder No. 2 & 3 Circuit
- DTC P0401: EGR Flow Insufficient
- DTC P0403: EGR Solenoid Control Circuit
- DTC P0404: EGR Desired Position Open Performance
- DTC P0405: EGR Valve Position Sensor Circuit - Low Voltage
- DTC P0410: Air System
- DTC P0413: Air Switching Valve Circuit Open
- DTC P0414: Air Switching Valve Circuit Shorted
- DTC P0418: Secondary Air Injection System Relay Circuit
- DTC P0420: TWC Catalyst Low Efficiency
- DTC P0440: EVAP System
- DTC P0442: EVAP System Small Leak Detected
- DTC P0444: EVAP Purge Valve Control Circuit Open
- DTC P0445: EVAP Purge Valve Control Circuit Shorted
- DTC P0446: EVAP Vent Solenoid Vent Control System
- DTC P0447: EVAP Vent Valve Control Circuit Open
- DTC P0448: EVAP Vent Valve Control Circuit Shorted
- DTC P0452: EVAP Fuel Tank Pressure Sensor Circuit - Low Voltage
- DTC P0453: EVAP Fuel Tank Pressure Sensor Circuit - High Voltage
- DTC P0461: Fuel Tank Level Sensor Circuit Performance
- DTC P0462: Fuel Tank Level Sensor Circuit - Low Voltage
- DTC P0463: Fuel Tank Level Sensor Circuit - High Voltage
- DTC P0480: Cooling Fan Relay Control Circuit
- DTC P0500: Vehicle Speed Sensor (VSS) Circuit
- DTC P0506: Idle Speed Low
- DTC P0507: Idle Speed High
- DTC P0508: Idle Control System Circuit Low
- DTC P0509: Idle Control System Circuit High
- DTC P0561: System Voltage Performance
- DTC P0562 Or P0563: System Voltage Low Or High
- DTC P0572: Cruise/Brake Switch Circuit - Low Voltage
- DTC P0573: Cruise/Brake Switch Circuit - High Voltage
- DTC P0601: Pcm Memory
- DTC P0602: Pcm Not Programmed
- DTC P0603: Pcm Memory Reset
- DTC P0606: Pcm Internal Performance
- DTC P0621: Gen Terminal L Circuit
- DTC P0646: A/C Clutch Relay Control Circuit Low Voltage
- DTC P0647: A/C Clutch Relay Control Circuit High Voltage
- DTC P0705: Transaxle Range Switch Circuit
- DTC P0706: Transaxle Range Switch Performance
- DTC P0708: Transaxle Range Switch Circuit High Voltage
- DTC P1133: O2S1 Circuit - Insufficient Switching
- DTC P1134: O2S1 Transition Time Ratio
- DTC P1336: CKP System Variation Not Learned
- DTC P1351: Ic CYL. #1 & 4 Circuit - High Voltage
- DTC P1352: Ic CYL. #2 & 3 Circuit - High Voltage
- DTC P1403: EGR Solenoid Control Circuit - Low Voltage
- DTC P1404: EGR Position Sensor Not Indicating Closed
- DTC P1418: Secondary Air Injection System Relay Control Circuit High
- DTC P1441: EVAP System Flow During Non-Purge
- DTC P1480: Cooling Fan Relay Control Circuit High
- DTC P1599: Engine Stall Or Near Stall Detected
- DTC P1620: Low Coolant Switch Circuit
- DTC P1621: Pcm Long Term Memory Performance
- DTC P1624: Customer Snapshot Data Available
- DTC P1626: Lost Class II Communication With BCM
- DTC P1630: Theft Deterrent System - Pcm In Learn Mode
- DTC P1631: Theft Deterrent System - Password Incorrect
- DTC P1635: 5-Volt Reference Circuit