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Diagnostic Trouble Codes (DTCS): DTCS

NOTE: DTCs can only be retrieved by using a scan tool. DTCs listed below are retrieved using a generic scan tool. MUT II scan tool can be used, but it may not read all DTCs. DTCS listed are not used on all vehicles.
DIAGNOSTIC TROUBLE CODE (DTC) INDEX

DTC Description Possible Cause
P0100  Volume Airflow (VAF) Circuit Malfunction Connector, Harness Or Faulty VAF Sensor
P0105  Barometric Pressure Circuit Malfunction Connector, Harness Or Faulty BARO Pressure Sensor
P0110  Intake Air Temperature (IAT) Circuit Malfunction Connector, Harness Or Faulty VAF Sensor
P0115  Engine Coolant Temperature (ECT) Circuit Malfunction Connector, Harness Or Faulty ECT Sensor
P0120  Throttle Position (TP) Circuit Malfunction Connector, Harness Or Faulty TP Sensor
P0125  Excessive Time To Enter Closed Loop Fuel Control Faulty Front HO2S, HO2S Connector/Harness Or Faulty Fuel Injector
P0130  (1) Front Heated Oxygen Sensor (HO2S) Circuit Malfunction Connector, Harness Or Faulty HO2S
P0135  (1) Front Heated Oxygen Sensor (HO2S) Heater Circuit Malfunction Connector, Harness Or Faulty HO2S
P0136  (1) Rear Heated Oxygen Sensor (HO2S) Circuit Malfunction Connector, Harness Or Faulty HO2S
P0141  (1) Rear Heated Oxygen Sensor (HO2S) Heater Circuit Malfunction Connector, Harness Or Faulty HO2S
P0150  (1) O2 Sensor Circuit Malfunction Harness And Connector (If Harness And Connector Are Normal, Replace Left Bank O2 Sensor Front)
P0155  (1) O2 Sensor Heater Circuit Malfunction (Bank 2 Sensor 1) <California> Harness And Connector, Left Bank O2 Sensor (Front) Heater
P0156  (1) O2 Sensor Circuit Malfunction (Bank 2 Sensor 2) <California> Harness And Connector, Left Bank O2 Sensor (Rear)
P0161  (1) O2 Sensor Heater Circuit Malfunction (Bank 2 Sensor 2) <California> Harness And Connector, Left Bank O2 Sensor (Rear Heater)
P0170  Fuel Trim Malfunction (Bank 1) Intake Air Leaks, Cracked Exhaust Manifold, Faulty VAF Sensor Frequency, HO2S, Injector, Fuel Pressure, ECT, IAT Or BARO Pressure Sensor
P0173  Fuel Trim Malfunction (Bank 2) <California> Intake Air Leaks, Cracked Exhaust Manifold, Faulty VAF Sensor Frequency, HO2S, Injector, Fuel Pressure, ECT, IAT Or BARO Pressure Sensor
P0201  Injector No. 1 Circuit Malfunction Connector, Harness Or Faulty Injector
P0202  Injector No. 2 Circuit Malfunction Connector, Harness Or Faulty Injector
P0203  Injector No. 3 Circuit Malfunction Connector, Harness Or Faulty Injector
P0204  Injector No. 4 Circuit Malfunction Connector, Harness Or Faulty Injector
P0205  Injector No. 5 Circuit Malfunction Connector, Harness Or Faulty Injector
P0206  Injector No. 6 Circuit Malfunction Connector, Harness Or Faulty Injector
P0300  (2) Random Misfire Detected Connector Or Harness, Faulty Ignition Coil, Ignition Power Transistor, Spark Plug, Ignition Circuit, Injector, HO2S, Compression Pressure, Timing Belt, Air Intake System, Fuel Pressure, Or CKP Sensor
P0301  (2) Cylinder No. 1 Misfire Detected Connector Or Harness, Faulty Ignition Coil, Ignition Power Transistor, Spark Plug, Ignition Circuit, Injector, HO2S, Compression Pressure, Timing Belt, Air Intake System, Fuel Pressure, Or CKP Sensor
P0302  (2) Cylinder No. 2 Misfire Detected Connector Or Harness, Faulty Ignition Coil, Ignition Power Transistor, Spark Plug, Ignition Circuit, Injector, HO2S, Compression Pressure, Timing Belt, Air Intake System, Fuel Pressure, Or CKP Sensor
P0303  (2) Cylinder No. 3 Misfire Detected Connector Or Harness, Faulty Ignition Coil, Ignition Power Transistor, Spark Plug, Ignition Circuit, Injector, HO2S, Compression Pressure, Timing Belt, Air Intake System, Fuel Pressure, Or CKP Sensor
P0304  (2) Cylinder No. 4 Misfire Detected Connector Or Harness, Faulty Ignition Coil, Ignition Power Transistor, Spark Plug, Ignition Circuit, Injector, HO2S, Compression Pressure, Timing Belt, Air Intake System, Fuel Pressure, Or CKP Sensor
P0305  (2) Cylinder No. 5 Misfire Detected Connector Or Harness, Faulty Ignition Coil, Ignition Power Transistor, Spark Plug , Ignition Circuit, Injector, HO2S, Compression Pressure, Timing Belt, Air Intake System, Fuel Pressure, Or CKP Sensor
P0306  (2) Cylinder No. 6 Misfire Detected Connector Or Harness, Faulty Ignition Coil, Ignition Power Transistor, Spark Plug, Ignition Circuit Injector, HO2S, Compression Pressure, Timing Belt, Air Intake System, Fuel Pressure, Or CKP Sensor
P0335  Crankshaft Position (CKP) Sensor Circuit Malfunction Connector, Harness Or Faulty CKP Sensor
P0340  Camshaft Position (CMP) Sensor Circuit Malfunction Connector, Harness Or Faulty CMP Sensor
P0400  Exhaust Gas Recirculation (EGR) Flow Malfunction Connector, Harness, Faulty EGR Valve, EGR Solenoid, EGR Valve Control Vacuum Or Manifold Differential Pressure Sensor
P0403  Exhaust Gas Recirculation (EGR) Flow Malfunction Connector, Harness Or Faulty EGR Solenoid
P0420  Catalytic Converter Efficiency Below Threshold Cracked Exhaust Manifold Or Faulty Catalytic Converter
P0421  Warm-Up Catalytic Converter Efficiency Below Threshold Faulty Exhaust Manifold Or Faulty Catalytic Converter
P0431  Warm Up Catalyst Efficiency Below Threshold (Bank 2) <California> Exhaust Manifold (Replace The Catalytic Converter If There Is No Cracks, Ect.)
P0440  Evaporative Emission Control System Malfunction <Federal> Harness And Connector, Evaporative Emission Purge Solenoid, Purge Control Valve, Vacuum Hoses Routing
P0442  Evaporative (EVAP) Emission Control System Leak Detected Connector Or Harness, Faulty EVAP Purge Solenoid, Purge Control Valve, Or Vacuum Hose Routing
P0443  Evaporative (EVAP) Emission Control System Purge Control Valve Circuit Malfunction Connector, Harness Or Faulty EVAP Solenoid
P0446  Evaporative (EVAP) Emission Control System Vent Control Malfunction Connector, Harness Or Faulty EVAP Vent Solenoid
P0450  Evaporative (EVAP) Emission Control System Pressure Sensor Malfunction Connector Or Harness, Or Faulty Fuel Tank Differential Pressure Sensor
P0500  Vehicle Speed Sensor (VSS) Malfunction Connector Or Harness, Or Faulty VSS
P0505  Idle Control System Malfunction Connector Or Harness, Or Faulty IAC Motor
P0510  Closed Throttle Position (TP) Switch Malfunction Connector Or Harness, Or Faulty Closed TP Switch
P0551  Power Steering Pressure (PSP) Sensor Circuit Range/Performance Connector Or Harness, Or Faulty PSP Sensor
P0705  Transmission Range Sensor Circuit Malfunction (RPNDL) Harness And Connector, Park/Neutral Position Switch
P1400  Manifold Differential Pressure (MDP) Sensor Circuit Malfunction Connector Or Harness, Or Faulty MDP Sensor
P1600  Serial Communication Link Malfunction Harness And Connector
P1715  PG Assembly Malfunction Harness And Connector, Pulse Generator
P1750  Solenoid Assembly Malfunction Harness And Connector, Converter Clutch Solenoid, Shift Control Solenoid, Pressure Control Solenoid
P1791  Engine Coolant Temperature Level Input Circuit (To TCM) Malfunction Harness And Connector
(1) Sensor 1 indicates the sensor is mounted at a position closest to the engine. Sensor 2 indicates the sensor is mounted at the position second closest to the engine.
(2) Diagnostic trouble code is recorded on the first detection of the malfunction.
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