Engine General Information & Diagnosis
- Precautions
- H25 Engine
- Precautions
- General Description
- Schematic & Routing Diagram
- Diagnostic Information & Procedures
- Engine & Emission Control System Check
- Description for Each Step
- Visual Inspection
- Engine Basic Check
- Malfunction Indicator Lamp (MIL) Check
- Diagnostic Trouble Code Table
- Diagnostic Trouble Code Check
- Diagnostic Trouble Code Clearance
- Fail-Safe Table
- Scan Tool Data
- Engine Symptom Diagnosis
- MIL Does Not Light or MIL Dims at Ignition Switch ON Leaving Engine OFF but Engine Can Be Starting
- MIL Remains ON after Engine Starts
- MIL Does Not Light at Ignition Switch ON & Engine Does Not Start though It Is Cranked Up
- DTC P0101: Mass Air Flow (MAF) Sensor Performance Problem
- DTC P0102: Mass Air Flow (MAF) Sensor Circuit Low Voltage
- DTC P0103: Mass Air Flow (MAF) Sensor Circuit High Voltage
- DTC P0107, P0108: Manifold Absolute Pressure Sensor Circuit Low/High Input
- DTC P0111: Intake Air Temperature (IAT) Sensor Circuit Range/Performance Problem
- DTC P0112: Intake Air Temperature (IAT) Sensor Circuit Low Input
- DTC P0113: Intake Air Temperature (IAT) Sensor Circuit High Input
- DTC P0116: Engine Coolant Temperature (ECT) Sensor Performance
- DTC P0117: Engine Coolant Temperature (ECT) Sensor Circuit Low Input
- DTC P0118: Engine Coolant Temperature (ECT) Sensor Circuit High Input
- DTC P0121: Throttle Position (TP) Sensor Circuit Performance Problem
- DTC P0122: Throttle Position (TP) Sensor Circuit Low Input
- DTC P0123: Throttle Position (TP) Sensor Circuit High Input
- DTC P0125: Insufficient Coolant Temperature for Closed Loop Fuel Control
- DTC P0128: Coolant Thermostat (Coolant Temp. below Thermostat Regulating Temp.)
- DTC P0131: HO2S (Bank-1 Sensor-1) Circuit Low Voltage
- DTC P0132: HO2S (Bank-1 Sensor-1) Circuit High Voltage
- DTC P0133: HO2S (Bank-1 Sensor-1) Circuit Slow Response
- DTC P0134: HO2S (Bank-1 Sensor-1) No Activity Detected
- DTC P0135: HO2S (Bank-1 Sensor-1) Heater Circuit Malfunction
- DTC P0137, P0138: HO2S (Bank-1 Sensor-2) Circuit Low/High Voltage
- DTC P0141: HO2S (Bank-1 Sensor-2) Heater Circuit Malfunction
- DTC P0151: HO2S (Bank-2 Sensor-1) Circuit Low Voltage
- DTC P0152: HO2S (Bank-2 Sensor-1) Circuit High Voltage
- DTC P0153: HO2S (Bank-2 Sensor-1) Circuit Slow Response
- DTC P0154: HO2S (Bank-2 Sensor-1) No Activity Detected
- DTC P0155: HO2S (Bank-2 Sensor-1) Heater Circuit Malfunction
- DTC P0157, P0158: HO2S (Bank-2 Sensor-2) Circuit Low/High Voltage
- DTC P0161: HO2S (Bank-2 Sensor-2) Heater Circuit Malfunction
- DTC P0171, P0172: Fuel System Too Lean/Rich (Bank-1)
- DTC P0174, P0175: Fuel System Too Lean/Rich (Bank-2)
- DTC P0300, P0301, P0302, P0303, P0304, P0305, P0306: Misfire Detected
- DTC P0335: Crankshaft Position (CKP) Sensor Circuit Malfunction
- DTC P0340: Camshaft Position (CMP) Sensor Circuit Malfunction
- DTC P0401, P0402: Exhaust Gas Recirculation (EGR) Flow Insufficient Detected/Excessive Detected
- DTC P0403: Exhaust Gas Recirculation (EGR) Control Circuit
- DTC P0420, P0430: Catalyst System (Bank-1/-2) Efficiency below Threshold
- DTC P0442, P0455: Evaporative Emission Control System Leak Detected (Small Leak)/(Gross Leak)
- DTC P0444, P0496: Evaporative Emission Control System Purge Control Valve Circuit Open/EVAP System Flow during Non-Purge
- DTC P0445: Evaporative Emission Control System Purge Control Valve Circuit Shorted
- DTC P0447: Evaporative Emission Control System Vent Control Circuit Open
- DTC P0448: Evaporative Emission Control System Vent Control Circuit Shorted
- DTC P0451: Evaporative Emission Control System Pressure Sensor Performance
- DTC P0452, P0453: Evaporative Emission Control System Pressure Sensor Low/High Input
- DTC P0456: Evaporative Emission System Leak Detected (Very Small Leak)
- DTC P0461: Fuel Level Sensor Circuit Performance
- DTC P0463: Fuel Level Sensor Circuit High Input
- DTC P0464: Fuel Level Sensor Circuit Intermittent
- DTC P0500: Vehicle Speed Sensor (VSS) Malfunction
- DTC P0505, P0506, P0507: Idle Control System/RPM Lower than Expected/RPM Higher than Expected
- DTC P0601: Internal Control Module Memory Check Sum Error
- DTC P0616, P0617: Starter Relay Circuit Low/High
- DTC P1107, P1108: Manifold Absolute Pressure Sensor Circuit Performance Problem (Low/High)
- DTC P1510: ECM (PCM) Back-Up Power Supply Malfunction
- DTC P2025: Evaporative Emissions Fuel Vapor Temperature Sensor Performance
- DTC P2026, P2027: Evaporative Emission Fuel Vapor Temperature Sensor Circuit Low Voltage/High Voltage
- DTC P2227, P2228, P2229: Barometric Pressure Circuit Performance Problem/Low/High
- DTC P2282: Air Leak between Throttle Body & Intake Valves
- Fuel Pump Circuit Check
- Fuel Injector Circuit Check
- Fuel Pressure Check
- Idle Speed/Idle Air Control (IAC) Duty Inspection
- A/C Signal Circuit Check
- A/C Condenser Fan Motor Relay Control System Check
- A/C Compressor Relay Control System Check
- Special Tools & Equipment
- H27 Engine
- Precautions
- General Description
- Diagnostic Information & Procedures
- Engine & Emission Control System Check
- Visual Inspection
- Engine Basic Check
- Malfunction Indicator Lamp (MIL) Check
- Diagnostic Trouble Code Check
- Diagnostic Trouble Code Table
- Diagnostic Trouble Code Clearance
- Fail-Safe Table
- Scan Tool Data
- Engine Symptom Diagnosis
- MIL Does Not Light or MIL Dims at Ignition Switch ON Leaving Engine OFF (But Engine Can be Starting)
- MIL Remains ON after Engine Starts
- MIL Dose Not Light at Ignition Switch ON and Engine Dose Not Start Through It Is Cranked Up
- DTC P0031, P0032: HO2S (Bank 1 Sensor-1) Heater Control Circuit Low/High
- DTC P0037, P0038: HO2S (Bank 1 Sensor-2) Heater Control Circuit Low/High
- DTC P0051, P0052: HO2S (Bank 2 Sensor-1) Heater Control Circuit Low/High
- DTC P0057, P0058: HO2S (Bank 2 Sensor-2) Heater Control Circuit Low/High
- DTC P0101: Mass Air Flow Circuit Performance
- DTC P0102: Mass Air Flow Circuit Low Input
- DTC P0103: Mass Air Flow Circuit High Input
- DTC P0107, P0108: Manifold Absolute Pressure Circuit Low Input/High Input
- DTC P0111: Intake Air Temperature Sensor Circuit Performance
- DTC P0112: Intake Air Temperature Sensor Circuit Low
- DTC P0113: Intake Air Temperature Sensor Circuit High
- DTC P0116: Engine Coolant Temperature Circuit Performance
- DTC P0117: Engine Coolant Temperature Circuit Low
- DTC P0118: Engine Coolant Temperature Circuit High
- DTC P0121: Throttle Position Sensor Circuit Performance
- DTC P0122: Throttle Position Sensor Circuit Low
- DTC P0123: Throttle Position Sensor Circuit High
- DTC P0125: Insufficient Coolant Temperature for Closed Loop Fuel Control
- DTC P0128: Coolant Thermostat (Coolant Temperature below Thermostat Regulating Temperature)
- DTC P0131, P0132: O2 Sensor (Bank 1 Sensor -1) Circuit Low/High Voltage
- DTC P0133: O2 Sensor (Bank 1 Sensor-1) Circuit Slow Response
- DTC P0134: O2 Sensor (Bank 1 Sensor-1) No Activity Detected
- DTC P0137: O2 Sensor (Bank 1 Sensor-2) Circuit Low Voltage
- DTC P0138, P0140: O2 Sensor (Bank 1 Sensor-2) Circuit High Voltage/No Activity Detected
- DTC P0151, P0152: O2 Sensor (Bank 2 Sensor-1) Circuit Low/High Voltage
- DTC P0153: O2 Sensor (Bank 2 Sensor-1) Circuit Slow Response
- DTC P0154: O2 Sensor (Bank 2 Sensor-1) No Activity Detected
- DTC P0157: O2 Sensor (Bank 2 Sensor-2) Circuit Low Voltage
- DTC P0158, P0160: O2 Sensor (Bank 2 Sensor-2) Circuit High Voltage/No Activity Detected
- DTC P0171/P0174: System Too Lean
- DTC P0172, P0175: System Too Rich
- DTC P0300, P0301, P0302, P0303, P0304, P0305, P0306: Misfire Detected
- DTC P0327, P0328: Knock Sensor Circuit Low/High
- DTC P0335: Crankshaft Position Sensor Circuit
- DTC P0340: Camshaft Position Sensor Circuit
- DTC P0401, P0402: Exhaust Gas Recirculation Flow Insufficient Detected/Excessive Detected
- DTC P0403: Exhaust Gas Recirculation Control Circuit
- DTC P0420: Catalyst System Efficiency below Threshold (Bank 1)
- DTC P0430: Catalyst System Efficiency below Threshold (Bank 2)
- DTC P0441: Evaporative Emission System Incorrect Purge Flow
- DTC P0442, P0455: Evaporative Emission System Leak Detected (Small Leak)/Leak Detected (Gross Leak)
- DTC P0443: Evaporative Emission System Purge Control Valve Circuit
- DTC P0446: Evaporative Emission System Vent Control Circuit
- DTC P0449: Evaporative Emission System Vent Valve/Solenoid Circuit
- DTC P0451: Evaporative Emission System Pressure Sensor Performance
- DTC P0452, P0453: Evaporative Emission System Pressure Sensor Low/High
- DTC P0456: Evaporative Emission System Leak Detected (Very Small Leak)
- DTC P0461: Fuel Level Sensor Circuit Performance
- DTC P0463: Fuel Level Sensor Circuit High
- DTC P0464: Fuel Level Sensor Circuit Intermittent
- DTC P0496: Evaporative Emission System High Purge Flow
- DTC P0500: Vehicle Speed Sensor
- DTC P0506, P0507: Idle Air Control System RPM Lower than Expected/Higher than Expected
- DTC P0601: Internal Control Module Memory Check Sum Error
- DTC P0616: Starter Relay Circuit Low
- DTC P0617: Starter Relay Circuit High
- DTC P1107, P1108: Manifold Absolute Pressure Circuit Performance Low/High
- DTC P0660: Intake Manifold Tuning Valve Control Circuit/Open
- DTC P1510: ECM Back-Up Power Circuit Low
- DTC P1601: CAN Communication Error
- DTC P1603: TCM Trouble Code Detected
- DTC P2025: Evaporative Emissions (EVAP) Fuel Vapor Temperature Sensor Performance
- DTC P2026: Evaporative Emissions (EVAP) Fuel Vapor Temperature Sensor Circuit Low Voltage
- DTC P2027: Evaporative Emissions (EVAP) Fuel Vapor Temperature Sensor Circuit High Voltage
- DTC P2227, P2228, P2229: Barometric Pressure Circuit Performance/Low/High
- Inspection of ECM & Its Circuits
- Fuel Pump Circuit Inspection
- Fuel Injector Circuit Inspection
- Fuel Pressure Control System Inspection
- Idle Air Control (IAC) System Inspection
- Idle Speed/Idle Air Control (IAC) Duty Inspection
- A/C Signal Circuit Check
- A/C Condenser Fan Motor Relay Low Speed Control System Check
- A/C Condenser Fan Motor Relay High-Speed Control System Check
- A/C Compressor Relay Control System Check
- Special Tools & Equipment