Engine General Information And Diagnosis
- General Description
- Schematic and Routing Diagram
- Component Location
- Diagnostic Information and Procedures
- Diagnostic Starting Point - Engine Controls
- Diagnostic Starting Point - Engine Electrical
- Engine Control Module Scan Tool Information (LY7)
- Powertrain Diagnostic Trouble Code (DTC) Type Definitions
- DTC Table
- DTC P000A: Intake Camshaft Position (CMP) System Slow Response Bank 1, DTC P000B: Exhaust Camshaft Position (CMP) System Slow Response Bank 1, DTC P000C: Intake Camshaft Position (CMP) System Slow Response Bank 2, DTC P000D: Exhaust Camshaft Position (CMP) System Slow Response Bank 2, DTC P0011: Intake Camshaft Position (CMP) System Performance Bank 1, DTC P0014: Exhaust Camshaft Position (CMP) System Performance Bank 1, DTC P0021, Intake Camshaft Position (CMP) System Performance Bank 2 or DTC P0024: Exhaust Camshaft Position (CMP) System Performance Bank 2
- DTC P0008: Engine Position System Performance Bank 1 or DTC P0009: Engine Position System Performance Bank 2
- DTC P0010: Intake Camshaft Position (CMP) Actuator Solenoid Control Circuit Bank 1, DTC P0013: Exhaust Camshaft Position (CMP) Actuator Solenoid Control Circuit Bank 1, DTC P0020: Intake Camshaft Position (CMP) Actuator Solenoid Control Circuit Bank 2, DTC P0023: Exhaust Camshaft Position (CMP) Actuator Solenoid Control Circuit Bank 2, DTC P2088: Intake Camshaft Position (CMP) Actuator Solenoid Control Circuit Low Voltage Bank 1, DTC P2089: Intake Camshaft Position (CMP) Actuator Solenoid Control Circuit High Voltage Bank 1, DTC P2090: Exhaust Camshaft Position (CMP) Actuator Solenoid Control Circuit Low Voltage Bank 1, DTC P2091: Exhaust Camshaft Position (CMP) Actuator Solenoid Control Circuit High Voltage Bank 1, DTC P2092: Intake Camshaft Position (CMP) Actuator Solenoid Control Circuit Low Voltage Bank 2, DTC P2093: Intake Camshaft Position (CMP) Actuator Solenoid Control Circuit High Voltage Bank 2, DTC P2094: Exhaust Camshaft Position (CMP) Actuator Solenoid Control Circuit Low Voltage Bank 2 or DTC P2095: Exhaust Camshaft Position (CMP) Actuator Solenoid Control Circuit High Voltage Bank 2
- DTC P0016: Crankshaft Position (CKP) - Intake Camshaft Position (CMP) Correlation Bank 1, DTC P0017: Crankshaft Position (CKP) - Exhaust Camshaft Position (CMP) Correlation Bank 1, DTC P0018: Crankshaft Position (CKP) - Intake Camshaft Position (CMP) Correlation Bank 2 or DTC P0019: Crankshaft Position (CKP) - Exhaust Camshaft Position (CMP) Correlation Bank 2
- DTC P0030: HO2S Heater Control Circuit Bank 1 Sensor 1, DTC P0031: HO2S Heater Control Circuit Low Voltage Bank 1 Sensor 1, DTC P0032: HO2S Heater Control Circuit High Voltage Bank 1 Sensor 1, DTC P0036: Heater Control Circuit Bank 1 Sensor 2, DTC P0037: HO2S Heater Control Circuit Low Voltage Bank 1 Sensor 2, DTC P0038: HO2S Heater Control Circuit High Voltage Bank 1 Sensor 2, DTC P0050: HO2S Heater Control Circuit Bank 2 Sensor 1, DTC P0051: HO2S Heater Control Circuit Low Voltage Bank 2 Sensor 1, DTC P0052: HO2S Heater Control Circuit High Voltage Bank 2 Sensor 1, DTC P0056: HO2S Heater Control Circuit Bank 2 Sensor 2, DTC P0057: HO2S Heater Control Circuit Low Voltage Bank 2 Sensor 2 or DTC P0058: HO2S Heater Control Circuit High Voltage Bank 2 Sensor 2
- Diagnostic Instructions
- DTC Descriptors
- Diagnostic Fault Information
- Circuit Description
- Conditions for Running the DTC
- P0030, P0031, P0032, P0050, P0051, P0052
- P0036, P0037, P0038, P0056, P0057, P0058
- Conditions for Setting the DTC
- Action Taken When the DTC Sets
- Conditions for Clearing the MIL/DTC
- Diagnostic Aids
- Reference Information
- Circuit/System Verification
- Circuit/System Testing
- Component Testing
- Repair Instructions
- DTC P0100: Mass Air Flow (MAF) Sensor Circuit, DTC P0102: Mass Air Flow (MAF) Sensor Circuit Low Frequency or DTC P0103: Mass Air Flow (MAF) Sensor Circuit High Frequency
- DTC P0101: Mass Air Flow (MAF) Sensor Circuit Performance
- DTC P0111: Intake Air Temperature (IAT) Sensor Circuit Performance, DTC P0112: Intake Air Temperature (IAT) Sensor Circuit Low Voltage or DTC P0113: Intake Air Temperature (IAT) Sensor Circuit High Voltage
- DTC P0116: Engine Coolant Temperature (ECT) Sensor Performance
- DTC P0117: Engine Coolant Temperature (ECT) Sensor Circuit Low Voltage or DTC P0118: Engine Coolant Temperature (ECT) Sensor Circuit High Voltage
- DTC P0119: Engine Coolant Temperature (ECT) Sensor Circuit Intermittent
- DTC P0121: Throttle Position (TP) Sensor 1 Performance, DTC P0122: Throttle Position (TP) Sensor 1 Circuit Low Voltage, DTC P0123: Throttle Position (TP) Sensor 1 Circuit High Voltage, DTC P0221: Throttle Position (TP) Sensor 2 Performance, DTC P0222: Throttle Position (TP) Sensor 2 Circuit Low Voltage or DTC P0223: Throttle Position (TP) Sensor 2 Circuit High Voltage
- DTC P0128: Engine Coolant Temperature (ECT) Below Thermostat Regulating Temperature
- DTC P0130: HO2S Signal Circuit Shorted to Heater Circuit Bank 1 Sensor 1 or DTC P0150: HO2S Signal Circuit Shorted to Heater Circuit Bank 2 Sensor 1 (W/O LLT)
- DTC P0131: HO2S Circuit Low Voltage Bank 1 Sensor 1 or DTC P0151: HO2S Circuit Low Voltage Bank 2 Sensor 1
- DTC P0132: HO2S Circuit High Voltage Bank 1 Sensor 1 or DTC P0152: HO2S Circuit High Voltage Bank 2 Sensor 1
- DTC P0133: HO2S Slow Response Bank 1 Sensor 1 or DTC P0153: HO2S Slow Response Bank 2 Sensor 1
- DTC P0134: HO2S Circuit Insufficient Activity Bank 1 Sensor 1 or DTC P0154: HO2S Circuit Insufficient Activity Bank 2 Sensor 1
- DTC P0135: HO2S Heater Performance Bank 1 Sensor 1, DTC P0141: HO2S Heater Performance Bank 1 Sensor 2, DTC P0155: HO2S Heater Performance Bank 2 Sensor 1 or DTC P0161: HO2S Heater Performance Bank 2 Sensor 2
- DTC P0137: HO2S Circuit Low Voltage Bank 1 Sensor 2, DTC P0138: HO2S Circuit High Voltage Bank 1 Sensor 2, DTC P0140: HO2S Circuit Insufficient Activity Bank 1 Sensor 2, DTC P0157: HO2S Circuit Low Voltage Bank 2 Sensor 2, DTC P0158: HO2S Circuit High Voltage Bank 2 Sensor 2 or DTC P0160: HO2S Circuit Insufficient Activity Bank 2 Sensor 2
- DTC P013A: HO2S Slow Response Rich to Lean Bank 1 Sensor 2, DTC P013C: HO2S Slow Response Rich to Lean Bank 2 Sensor 2, DTC P013E: HO2S Delayed Response Rich to Lean Bank 1 Sensor 2 or DTC P014A: HO2S Delayed Response Rich to Lean Bank 2 Sensor 2
- DTC P0201: Injector 1 Control Circuit, DTC P0202: Injector 2 Control Circuit, DTC P0203: Injector 3 Control Circuit, DTC P0204: Injector 4 Control Circuit, DTC P0205: Injector 5 Control Circuit, DTC P0206: Injector 6 Control Circuit, DTC P0261: Injector 1 Control Circuit Low Voltage, DTC P0262: Injector 1 Control Circuit High Voltage, DTC P0264: Injector 2 Control Circuit Low Voltage, DTC P0265: Injector 2 Control Circuit High Voltage, DTC P0267: Injector 3 Control Circuit Low Voltage, DTC P0268: Injector 3 Control Circuit High Voltage, DTC P0270: Injector 4 Control Circuit Low Voltage, DTC P0271: Injector 4 Control Circuit High Voltage, DTC P0273: Injector 5 Control Circuit Low Voltage, DTC P0274: Injector 5 Control Circuit High Voltage, DTC P0276: Injector 6 Control Circuit Low Voltage or DTC P0277: Injector 6 Control Circuit High Voltage
- Diagnostic Instructions
- DTC Descriptors
- Diagnostic Fault Information
- Circuit/System Description
- Conditions for Running the DTC
- Conditions for Setting the DTC
- P0201, P0202, P0203, P0204, P0205, or P0206
- P0261, P0264, P0267, P0270, P0273, or P0276
- P0262, P0265, P0268, P0271, P0274, or P0277
- Action Taken When the DTC Sets
- Conditions for Clearing the DTC
- Diagnostic Aids
- Reference Information
- Circuit/System Verification
- Circuit/System Testing
- Component Testing
- Repair Instructions
- DTC P0300: Engine Misfire Detected, DTC P0301: Cylinder 1 Misfire Detected, DTC P0302: Cylinder 2 Misfire Detected, DTC P0303: Cylinder 3 Misfire Detected, DTC P0304: Cylinder 4 Misfire Detected, DTC P0305: Cylinder 5 Misfire Detected or DTC P0306: Cylinder 6 Misfire Detected
- DTC P0324: Knock Sensor (KS) Module Performance
- DTC P0326: Knock Sensor (KS) System Performance Bank 1, DTC P0327: Knock Sensor (KS) Circuit Low Voltage Bank 1, DTC P0328: Knock Sensor (KS) Circuit High Voltage Bank 1, DTC P0331: Knock Sensor (KS) System Performance Bank 2, DTC P0332: Knock Sensor (KS) Circuit Low Voltage Bank 2 or DTC P0333: Knock Sensor (KS) Circuit High Voltage Bank 2
- DTC P0335: Crankshaft Position (CKP) Sensor Circuit, DTC P0336: Crankshaft Position (CKP) Sensor Performance or DTC P0338: Crankshaft Position (CKP) Sensor Circuit High Duty Cycle
- DTC P0341: Intake Camshaft Position (CMP) Sensor Performance Bank 1, DTC P0342: Intake Camshaft Position (CMP) Sensor Circuit Low Voltage Bank 1, DTC P0343: Intake Camshaft Position (CMP) Sensor Circuit High Voltage Bank 1, DTC P0346: Intake Camshaft Position (CMP) Sensor Performance Bank 2, DTC P0347: Intake Camshaft Position (CMP) Sensor Circuit Low Voltage Bank 2, DTC P0348: Intake Camshaft Position (CMP) Sensor Circuit High Voltage Bank 2, DTC P0366: Exhaust Camshaft Position (CMP) Sensor Performance Bank 1, DTC P0367: Exhaust Camshaft Position (CMP) Sensor Circuit Low Voltage Bank 1, DTC P0368: Exhaust Camshaft Position (CMP) Sensor Circuit High Voltage Bank 1, DTC P0391: Exhaust Camshaft Position (CMP) Sensor Performance Bank 2, DTC P0392: Exhaust Camshaft Position (CMP) Sensor Circuit Low Voltage Bank 2 or DTC P0393: Exhaust Camshaft Position (CMP) Sensor Circuit High Voltage Bank 2
- DTC P0351: Ignition Coil 1 Control Circuit, DTC P0352: Ignition Coil 2 Control Circuit, DTC P0353: Ignition Coil 3 Control Circuit, DTC P0354: Ignition Coil 4 Control Circuit, DTC P0355: Ignition Coil 5 Control Circuit, DTC P0356: Ignition Coil 6 Control Circuit, DTC P2300: Ignition Coil 1 Control Circuit Low Voltage, DTC P2301: Ignition Coil 1 Control Circuit High Voltage, DTC P2303: Ignition Coil 2 Control Circuit Low Voltage, DTC P2304: Ignition Coil 2 Control Circuit High Voltage, DTC P2306: Ignition Coil 3 Control Circuit Low Voltage, DTC P2307: Ignition Coil 3 Control Circuit High Voltage, DTC P2309: Ignition Coil 4 Control Circuit Low Voltage, DTC P2310: Ignition Coil 4 Control Circuit High Voltage, DTC P2312: Ignition Coil 5 Control Circuit Low Voltage, DTC P2313: Ignition Coil 5 Control Circuit High Voltage, DTC P2315: Ignition Coil 6 Control Circuit Low Voltage or DTC P2316: Ignition Coil 6 Control Circuit High Voltage
- Diagnostic Instructions
- DTC Descriptors
- Diagnostic Fault Information
- Circuit/System Description
- Conditions for Running the DTC
- Conditions for Setting the DTC
- P0351-P0356
- P2300, P2303, P2306, P2309, P2312, or P2315
- P2301, P2304, P2307, P2310, P2313, or P2316
- Action Taken When the DTC Sets
- Conditions for Clearing the DTC
- Diagnostic Aids
- Reference Information
- Circuit/System Verification
- Circuit/System Testing
- Repair Instructions
- DTC P0420: Catalyst System Low Efficiency Bank 1 or DTC P0430: Catalyst System Low Efficiency Bank 2
- DTC P0442: Evaporative Emission (EVAP) System Small Leak Detected
- DTC P0443: Evaporative Emission (EVAP) Purge Solenoid Control Circuit, DTC P0458: Evaporative Emission (EVAP) Purge Solenoid Control Circuit Low Voltage or DTC P0459: Evaporative Emission (EVAP) Purge Solenoid Control Circuit High Voltage
- DTC P0446: Evaporative Emissions (EVAP) Vent System Performance
- DTC P0449: Evaporative Emission (EVAP) Vent Solenoid Valve Control Circuit, DTC P0498: Evaporative Emission (EVAP) Vent Solenoid Valve Control Circuit Low Voltage or DTC P0499: Evaporative Emission (EVAP) Vent Solenoid Valve Control Circuit High Voltage
- DTC P0450: Fuel Tank Pressure (FTP) Sensor Circuit or DTC P0451: Fuel Tank Pressure (FTP) Sensor Performance
- DTC P0452: Fuel Tank Pressure (FTP) Sensor Circuit Low Voltage or DTC P0453: Fuel Tank Pressure (FTP) Sensor Circuit High Voltage
- DTC P0455: Evaporative Emission (EVAP) System Large Leak Detected or DTC P0497: Evaporative Emission (EVAP) System No Flow During Purge
- DTC P0496: Evaporative Emissions (EVAP) System Continuous Purge Flow
- DTC P0506: Idle Speed Low, DTC P0507: Idle Speed High or DTC P050A: Cold Start Idle Air Control (IAC) System Performance
- DTC P0562: System Voltage Low - ECM
- DTC P0563: System Voltage High - ECM
- DTC P0601: Control Module Read Only Memory (ROM), DTC P0602: Control Module Not Programmed, DTC P0603: Control Module Long Term Memory Reset, DTC P0604: Control Module Random Access Memory (RAM), DTC P0606: Control Module Internal Performance, DTC P0167: Control Module Ignition Coil Internal Circuit or DTC P2610: Control Module Ignition Off Timer Performance
- DTC P0627: Fuel Pump Relay Control Circuit, DTC P0628: Fuel Pump Relay Control Circuit Low Voltage or DTC P0629: Fuel Pump Relay Control Circuit High Voltage
- DTC P0638: Throttle Actuator Control (TAC) Command Performance, DTC P2100: Throttle Actuator Control (TAC) Motor Control Circuit, DTC P2101: Control Module Throttle Actuator Position Performance or DTC P2119: Throttle Closed Position Performance
- DTC P0641: 5 Volt Reference 1 Circuit, DTC P0642: 5 Volt Reference 1 Circuit Low Voltage, DTC P0643: 5 Volt Reference 1 Circuit High Voltage, DTC P0651: 5-Volt Reference 2 Circuit, DTC P0652: 5 Volt Reference 2 Circuit Low Voltage, DTC P0653: 5 Volt Reference 2 Circuit High Voltage, DTC P0697: 5-Volt Reference 3 Circuit, DTC P0698: 5 Volt Reference 3 Circuit Low Voltage or DTC P0699: 5 Volt Reference 3 Circuit High Voltage
- DTC P0650: Malfunction Indicator Lamp (MIL) Control Circuit
- DTC P0685: Engine Controls Ignition Relay Control Circuit, DTC P0686: Engine Controls Ignition Relay Control Circuit Low Voltage, DTC P0687: Engine Controls Ignition Relay Control Circuit High Voltage, DTC P0689: Engine Controls Ignition Relay Feedback Circuit Low Voltage or DTC P0690: Engine Controls Ignition Relay Feedback Circuit High Voltage
- DTC P0700: Transmission Control Module (TCM) Requested MIL Illumination
- DTC P0856: Traction Control Torque Request Circuit
- DTC P1011: Intake Camshaft Position (CMP) Actuator Park Position Bank 1, DTC P1012: Exhaust Camshaft Position (CMP) Actuator Park Position Bank 1, DTC P1013: Intake Camshaft Position (CMP) Actuator Park Position Bank 2, DTC P1014: Exhaust Camshaft Position (CMP) Actuator Park Position Bank 2
- DTC P1551: Throttle Valve Rest Position Not Reached During Learn
- DTC P2096: Post Catalyst Fuel Trim System Low Limit Bank 1 or DTC P2098: Post Catalyst Fuel Trim System Low Limit Bank 2
- DTC P2097: Post Catalyst Fuel Trim System High Limit Bank 1 or DTC P2099: Post Catalyst Fuel Trim System High Limit Bank 2
- DTC P2105: Throttle Actuator Control (TAC) System - Forced Engine Shutdown
- DTC P2122: Accelerator Pedal Position (APP) Sensor 1 Circuit Low Voltage, DTC P2123: Accelerator Pedal Position (APP) Sensor 1 Circuit High Voltage, DTC P2127: Accelerator Pedal Position (APP) Sensor 2 Circuit Low Voltage, DTC P2128: Accelerator Pedal Position (APP) Sensor 2 Circuit High Voltage, or DTC P2138: Accelerator Pedal Position (APP) Sensor 1-2 Correlation
- DTC P2176: Minimum Throttle Position Not Learned
- DTC P2177: Fuel Trim System Lean at Cruise or Accel Bank 1, DTC P2179: Fuel Trim System Lean at Cruise or Accel Bank 2, DTC P2187: Fuel Trim System Lean at Idle Bank 1 or DTC P2189: Fuel Trim System Lean at Idle Bank 2
- DTC P2178: Fuel Trim System Rich at Cruise or Accel Bank 1, DTC P2180: Fuel Trim System Rich at Cruise or Accel Bank 2, DTC P2188: Fuel Trim System Rich at Idle Bank 1 or DTC P2190: Fuel Trim System Rich at Idle Bank 2
- DTC P2227: Barometric Pressure (BARO) Sensor Performance, DTC P2228: Barometric Pressure (BARO) Sensor Circuit Low Voltage or DTC P2229: Barometric Pressure (BARO) Sensor Circuit High Voltage
- DTC P2232: HO2S Signal Circuit Shorted to Heater Circuit Bank 1 Sensor 2 or DTC P2235: HO2S Signal Circuit Shorted to Heater Circuit Bank 2 Sensor 2
- DTC P2270: HO2S Signal Stuck Lean Bank 1 Sensor 2 or DTC P2272: HO2S Signal Stuck Lean Bank 2 Sensor 2
- DTC P2271: HO2S Signal Stuck Rich Bank 1 Sensor 2 or DTC P2273: HO2S Signal Stuck Rich Bank 2 Sensor 2
- DTC P2636: Fuel Transfer Pump Flow Insufficient
- Symptoms - Engine Controls
- Poor Fuel Fill Quality
- Engine Cranks but Does Not Run
- Inspection/Maintenance (I/M) System Check
- Inspection/Maintenance (I/M) Complete System Set Procedure
- Inspection/Maintenance (I/M) System DTC Table
- Repair Instructions
- Specifications
- Special Tools - Engine Controls - 3.6L (LY7)