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Engine Controls - Self-Diagnostics Expand All (for easy ctrl-f) Collapse All Diagnostic Trouble Code (DTC) Identification Diagnostic Tests Notes DTC P0102, P0103: Mass Airflow (MAF) Sensor DTC P0112, P0113: Intake Air Temperature (IAT) Sensor DTC P0116, P0117, P0118: Engine Coolant Temperature (ECT) Sensor DTC P0121, P0122, P0123: Throttle Position (TP) Sensor DTC P0130, P0136: Ho2S Circuit Malfunction DTC P0131, P0137: Ho2S Circuit Low Voltage DTC P0132, P0138: Ho2S Circuit High Voltage DTC P0133, P0134: Front Ho2S Circuit Slow Response Or No Activity Detected DTC P0135, P0141: Ho2S Heater Circuit Malfunction DTC P0201, P0202, P0203, P0204: Cylinders No. 1-4 Injector Circuit Malfunction DTC P0300: Random Misfire Detected DTC P0301, P0302, P0303, P0304: Cylinders No. 1-4 Misfire Detected DTC P0326: Knock Sensor (KS) Range DTC P0335, P0336: Crankshaft Position (CKP) Sensor DTC P0342, P0343: Camshaft Position (CMP) Sensor DTC P0422: Catalyst Efficiency Below Threshold DTC P0441, P0442, P0443, P0455: EVAP Purge Control Valve System DTC P0444, P0445: EVAP Purge Control Valve DTC P0446, P0447, P0448: Canister Close Valve DTC P0451, P0452, P0453: Fuel Tank Pressure (Ftp) Sensor DTC P0501: Vehicle Speed Sensor (VSS) Malfunction DTC P0506, P0507: Idle Rpm Is Not As Expected DTC P1123, P1124, P1127, P1128: Air/Fuel Ratio Control DTC P1510, P1552: Idle Speed Control (ISC) Actuator Circuit Shorted DTC P1513, P1553: Idle Speed Control (ISC) Actuator Circuit Open DTC P1605, P1606: Acceleration/Rough Road Sensor DTC P1611, P1613: Mil Request Signal Circuit