October 30: LEMON manuals on a temporary server, it is slow and having issues, download the manuals you need! Later in November we will switch back to the fast server.
Engine Controls - Self-Diagnostics Expand All (for easy ctrl-f) Collapse All Introduction Component Locations Self-Diagnostic System Summary Diagnostic Trouble Code Definitions Diagnostic Tests Notes Check Engine Light Does Not Come On Check Engine Light Stays On DTC P0106: Map Sensor (Mechanical) DTC P0107: Map Sensor Circuit (Low Voltage) DTC P0108: Map Sensor Circuit (High Voltage) DTC P0112: IAT Sensor Circuit (Low Voltage) DTC P0113: IAT Sensor Circuit (High Voltage) DTC P0116: ECT Sensor Circuit (Range/Performance) DTC P0117: ECT Sensor Circuit (Low Voltage) DTC P0118: ECT Sensor Circuit (High Voltage) DTC P0122: Throttle Position Sensor Circuit (Low Voltage) DTC P0123: Throttle Position Sensor (High Voltage) DTC P0131 Or P0151: Rear Or Front Primary Ho2S (Low Voltage) DTC P0132 Or P0152: Rear Or Front Primary Ho2S (High Voltage) DTC P0133 Or P0153: Rear Or Front Primary Ho2S (Slow Response) DTC P0135, P0141, P0155 Or P0161: Ho2S Heater Circuit Malfunction DTC P0137 Or P0157: Rear Or Front Secondary Ho2S (Low Voltage) DTC P0138 Or P0158: Rear Or Front Secondary Ho2S (High Voltage) DTC P0139 Or P0159: Rear Or Front Secondary Ho2S (Slow Response) DTC P0171, P0172, P0174 Or P0175: System Too Lean/Rich DTC P0325 Or P0330: Rear Or Front Knock Sensor DTC P0335, P0336, P1336, P1337, P1381, P1382, P1386, P1387: CKP/CYP Sensor (Circuit Malfunction) DTC P0401: EGR System (Insufficient Flow) DTC P0420 Or P0430: Rear Or Front Three Way Catalytic Converter DTC P0441: Insufficient EVAP Purge Flow DTC P0500: Vehicle Speed Sensor DTC P1107 Or P1108: BARO Sensor (Low Or High Voltage) DTC P1201, P1202, P01203, P1204, P1205, P1206 Or P1301, P1302, P1303, P1304, P1305, P1306: Misfire Detected DTC P1241 Or P1242: Throttle Valve Control Motor Circuit Malfunction DTC P1243 Or P1244: Insufficient Throttle Position DTC P1246, P1247 Or P1248: Accelerator Position Sensor Circuit Malfunction DTC P1259 Or P1279: Rear Or Front VTEC (Pressure Switch Or Solenoid Valve) DTC P1300: Random Misfire DTC P1316 Or P1317: Spark Plug Voltage Detection Module DTC P1318 Or P1319: Spark Plug Voltage Detection Module Reset DTC P1459: EVAP Purge Flow Switch DTC P1491: EGR Valve System Malfunction DTC P1498: EGR System Valve Lift Sensor Circuit (High Voltage) DTC P1607 Or P1608: ECM Internal Circuit Failure DTC P1671 Or P1672: A/T FI Signal "B" (No Signal Or Failure) Special Tools