Engine Control System (Diagnostic Codes & Symptom Tests)

• DTC/Circuit Diagnosis
  • DTC Index
  • DTC U0101: Can Comm Circuit
    • DTC Logic
      • DTC Detection Logic
      • DTC Confirmation Procedure
    • Diagnosis Procedure
  • DTC U0293: Hybrid Powertrain Control Module
    • DTC Logic
      • DTC Detection Logic
      • DTC Confirmation Procedure
    • Diagnosis Procedure
  • DTC U1001: Can Comm Circuit
    • Description
    • DTC Logic
      • DTC Detection Logic
      • DTC Confirmation Procedure
    • Diagnosis Procedure
  • DTC U1003: Can Comm Circuit
    • Description
    • DTC Logic
      • DTC Detection Logic
      • DTC Confirmation Procedure
    • Diagnosis Procedure
  • DTC P0011, P0021: IVT Control
    • DTC Logic
      • DTC Detection Logic
      • DTC Confirmation Procedure
    • Diagnosis Procedure
    • Component Inspection
  • DTC P0014, P0024: EVT Control
    • DTC Logic
      • DTC Detection Logic
      • DTC Confirmation Procedure
    • Diagnosis Procedure
    • Component Inspection
  • DTC P0031, P0032, P0051, P0052: A/F Sensor 1 Heater
    • DTC Logic
      • DTC Detection Logic
      • DTC Confirmation Procedure
    • Diagnosis Procedure
    • Component Inspection
  • DTC P0037, P0038, P0057, P0058: Ho2S2 Heater
    • DTC Logic
      • DTC Detection Logic
      • DTC Confirmation Procedure
    • Diagnosis Procedure
    • Component Inspection
  • DTC P0075, P0081: IVT Control Solenoid Valve
    • DTC Logic
      • DTC Detection Logic
      • DTC Confirmation Procedure
    • Diagnosis Procedure
    • Component Inspection
  • DTC P0078, P0084: EVT Control Solenoid Valve
    • DTC Logic
      • DTC Detection Logic
      • DTC Confirmation Procedure
    • Diagnosis Procedure
    • Component Inspection (Exhaust Valve Timing Control Solenoid Valve)
  • DTC P0101, P010B: MAF Sensor
    • DTC Logic
      • DTC Detection Logic
      • DTC Confirmation Procedure
    • Diagnosis Procedure
    • Component Inspection
  • DTC P0102, P0103, P010C, P010D: MAF Sensor
    • DTC Logic
      • DTC Detection Logic
      • DTC Confirmation Procedure
    • Diagnosis Procedure
    • Component Inspection
  • DTC P0111: IAT Sensor
    • DTC Logic
      • DTC Detection Logic
      • DTC Confirmation Procedure
    • Component Function Check
    • Diagnosis Procedure
    • Component Inspection
  • DTC P0112, P0113: IAT Sensor
    • DTC Logic
      • DTC Detection Logic
      • DTC Confirmation Procedure
    • Diagnosis Procedure
    • Component Inspection
  • DTC P0116: ECT Sensor
    • DTC Logic
      • DTC Detection Logic
      • DTC Confirmation Procedure
    • Component Function Check
    • Diagnosis Procedure
    • Component Inspection
  • DTC P0117, P0118: ECT Sensor
    • DTC Logic
      • DTC Detection Logic
      • DTC Confirmation Procedure
    • Diagnosis Procedure
    • Component Inspection
  • DTC P0122, P0123, P0227, P0228: TP Sensor
    • DTC Logic
      • DTC Detection Logic
      • DTC Confirmation Procedure
    • Diagnosis Procedure
    • Component Inspection
    • Special Repair Requirement
  • DTC P0125: ECT Sensor
    • DTC Logic
      • DTC Detection Logic
      • DTC Confirmation Procedure
    • Diagnosis Procedure
    • Component Inspection
  • DTC P0127: IAT Sensor
    • DTC Logic
      • DTC Detection Logic
      • DTC Confirmation Procedure
    • Diagnosis Procedure
    • Component Inspection
  • DTC P0128: Thermostat Function
    • DTC Logic
      • DTC Detection Logic
      • DTC Confirmation Procedure
    • Diagnosis Procedure
    • Component Inspection
  • DTC P0130, P0150: A/F Sensor 1
    • DTC Logic
      • DTC Detection Logic
      • DTC Confirmation Procedure
    • Component Function Check
    • Diagnosis Procedure
  • DTC P0131, P0151: A/F Sensor 1
    • DTC Logic
      • DTC Detection Logic
      • DTC Confirmation Procedure
    • Diagnosis Procedure
  • DTC P0132, P0152: A/F Sensor 1
    • DTC Logic
      • DTC Detection Logic
      • DTC Confirmation Procedure
    • Diagnosis Procedure
  • DTC P0133, P0153: A/F Sensor 1
    • DTC Logic
      • DTC Detection Logic
      • DTC Confirmation Procedure
    • Diagnosis Procedure
  • DTC P0137, P0157: Ho2S2
    • DTC Logic
      • DTC Detection Logic
      • DTC Confirmation Procedure
    • Component Function Check
    • Diagnosis Procedure
    • Component Inspection
  • DTC P0138, P0158: Ho2S2
    • DTC Logic
      • DTC Detection Logic
      • DTC Confirmation Procedure
    • Component Function Check
    • Diagnosis Procedure
    • Component Inspection
  • DTC P0139, P0159: Ho2S2
    • DTC Logic
      • DTC Detection Logic
      • DTC Confirmation Procedure
    • Component Function Check
    • Diagnosis Procedure
    • Component Inspection
  • DTC P014C, P014D, P014E, P014F: A/F Sensor 1
    • DTC Logic
      • DTC Detection Logic
      • DTC Confirmation Procedure
    • Component Function Check
    • Diagnosis Procedure
  • DTC P0171, P0174: Fuel Injection System Function
    • DTC Logic
      • DTC Detection Logic
      • DTC Confirmation Procedure
    • Diagnosis Procedure
  • DTC P0172, P0175: Fuel Injection System Function
    • DTC Logic
      • DTC Detection Logic
      • DTC Confirmation Procedure
    • Diagnosis Procedure
  • DTC P0181: FTT Sensor
    • DTC Logic
      • DTC Detection Logic
      • DTC Confirmation Procedure
    • Component Function Check
    • Diagnosis Procedure
    • Component Inspection
  • DTC P0182, P0183: FTT Sensor
    • DTC Logic
      • DTC Detection Logic
      • DTC Confirmation Procedure
    • Diagnosis Procedure
    • Component Inspection
  • DTC P0196: EOT Sensor
    • DTC Logic
      • DTC Detection Logic
      • DTC Confirmation Procedure
    • Component Function Check
    • Diagnosis Procedure
    • Component Inspection
  • DTC P0197, P0198: EOT Sensor
    • DTC Logic
      • DTC Detection Logic
      • DTC Confirmation Procedure
    • Diagnosis Procedure
    • Component Inspection
  • DTC P0201, P0202, P0203, P0204, P0205, P0206: Fuel Injector
    • DTC Logic
      • DTC Detection Logic
      • DTC Confirmation Procedure
    • Diagnosis Procedure
    • Component Inspection
  • DTC P0222, P0223, P2132, P2133: TP Sensor
    • DTC Logic
      • DTC Detection Logic
      • DTC Confirmation Procedure
    • Diagnosis Procedure
    • Component Inspection
    • Special Repair Requirement
  • DTC P0300, P0301, P0302, P0303, P0304, P0305, P0306: Misfire
    • DTC Logic
      • DTC Detection Logic
      • DTC Confirmation Procedure
    • Diagnosis Procedure
  • DTC P0327, P0328, P0332, P0333: KS
    • DTC Logic
      • DTC Detection Logic
      • DTC Confirmation Procedure
    • Diagnosis Procedure
    • Component Inspection
  • DTC P0335: CKP Sensor (Pos)
    • DTC Logic
      • DTC Detection Logic
      • DTC Confirmation Procedure
    • Diagnosis Procedure
    • Component Inspection
  • DTC P0340, P0345: CMP Sensor (Phase)
    • DTC Logic
      • DTC Detection Logic
      • DTC Confirmation Procedure
    • Diagnosis Procedure
    • Component Inspection
  • DTC P0420, P0430: Three Way Catalyst Function
    • DTC Logic
      • DTC Detection Logic
      • DTC Confirmation Procedure
    • Component Function Check
    • Diagnosis Procedure
  • DTC P0441: EVAP Control System
    • DTC Logic
      • DTC Detection Logic
      • DTC Confirmation Procedure
    • Component Function Check
    • Diagnosis Procedure
  • DTC P0443: EVAP Canister Purge Volume Control Solenoid Valve
    • DTC Logic
      • DTC Detection Logic
      • DTC Confirmation Procedure
    • Diagnosis Procedure
    • Component Inspection
  • DTC P0444, P0445: EVAP Canister Purge Volume Control Solenoid Valve
    • DTC Logic
      • DTC Detection Logic
      • DTC Confirmation Procedure
    • Diagnosis Procedure
    • Component Inspection
  • DTC P0447: EVAP Canister Vent Control Valve
    • DTC Logic
      • DTC Detection Logic
      • DTC Confirmation Procedure
    • Diagnosis Procedure
    • Component Inspection
  • DTC P0448: EVAP Canister Vent Control Valve
    • DTC Logic
      • DTC Detection Logic
      • DTC Confirmation Procedure
    • Diagnosis Procedure
    • Component Inspection
  • DTC P0451: EVAP Control System Pressure Sensor
    • DTC Logic
      • DTC Detection Logic
      • DTC Confirmation Procedure
    • Diagnosis Procedure
    • Component Inspection
  • DTC P0452: EVAP Control System Pressure Sensor
    • DTC Logic
      • DTC Detection Logic
      • DTC Confirmation Procedure
    • Diagnosis Procedure
    • Component Inspection
  • DTC P0453: EVAP Control System Pressure Sensor
    • DTC Logic
      • DTC Detection Logic
      • DTC Confirmation Procedure
    • Diagnosis Procedure
    • Component Inspection
  • DTC P0456: EVAP Control System
    • DTC Logic
      • DTC Detection Logic
      • DTC Confirmation Procedure
    • Diagnosis Procedure
    • Component Inspection
  • DTC P0460: Fuel Level Sensor
    • DTC Logic
      • DTC Detection Logic
      • DTC Confirmation Procedure
    • Diagnosis Procedure
  • DTC P0461: Fuel Level Sensor
    • DTC Logic
      • DTC Detection Logic
      • DTC Confirmation Procedure
    • Component Function Check
    • Diagnosis Procedure
  • DTC P0462, P0463: Fuel Level Sensor
    • DTC Logic
      • DTC Detection Logic
      • DTC Confirmation Procedure
    • Diagnosis Procedure
  • DTC P0500: VSS
    • Description
    • DTC Logic
      • DTC Detection Logic
      • DTC Confirmation Procedure
    • Component Function Check
    • Diagnosis Procedure
  • DTC P0506: ISC System
    • Description
    • DTC Logic
      • DTC Detection Logic
      • DTC Confirmation Procedure
    • Diagnosis Procedure
  • DTC P0507: ISC System
    • Description
    • DTC Logic
      • DTC Detection Logic
      • DTC Confirmation Procedure
    • Diagnosis Procedure
  • DTC P050A, P050B, P050E: Cold Start Control
    • Description
    • DTC Logic
      • DTC Detection Logic
      • DTC Confirmation Procedure
    • Diagnosis Procedure
  • DTC P0520: EOP Sensor
    • DTC Logic
      • DTC Detection Logic
      • DTC Confirmation Procedure
    • Diagnosis Procedure
    • Component Inspection (EOP sensor)
  • DTC P0603: ECM Power Supply
    • Description
    • DTC Logic
      • DTC Detection Logic
      • DTC Confirmation Procedure
    • Diagnosis Procedure
  • DTC P0605: ECM
    • DTC Logic
      • DTC Detection Logic
      • DTC Confirmation Procedure
    • Diagnosis Procedure
  • DTC P0607: ECM
    • DTC Logic
      • DTC Detection Logic
      • DTC Confirmation Procedure
    • Diagnosis Procedure
  • DTC P0643: Sensor Power Supply
    • DTC Logic
      • DTC Detection Logic
      • DTC Confirmation Procedure
    • Diagnosis Procedure
  • DTC P1078, P1084: EVT Control Position Sensor
    • DTC Logic
      • DTC Detection Logic
      • DTC Confirmation Procedure
    • Diagnosis Procedure
    • Component Inspection
  • DTC P1148, P1168: Closed Loop Control
    • DTC Logic
      • DTC Detection Logic
    • Diagnosis Procedure
  • DTC P1217: Engine Over Temperature
    • DTC Logic
      • DTC Detection Logic
      • DTC Confirmation Procedure
    • Component Function Check
    • Diagnosis Procedure
  • DTC P1225, P1234: TP Sensor
    • DTC Logic
      • DTC Detection Logic
      • DTC Confirmation Procedure
    • Diagnosis Procedure
    • Special Repair Requirement
  • DTC P1226, P1235: TP Sensor
    • DTC Logic
      • DTC Detection Logic
      • DTC Confirmation Procedure
    • Diagnosis Procedure
    • Special Repair Requirement
  • DTC P1233, P2101: Electric Throttle Control Function
    • DTC Logic
      • DTC Detection Logic
      • DTC Confirmation Procedure
    • Diagnosis Procedure
    • Component Inspection
    • Special Repair Requirement
  • DTC P1236, P2118: Throttle Control Motor
    • DTC Logic
      • DTC Detection Logic
      • DTC Confirmation Procedure
    • Diagnosis Procedure
    • Component Inspection
    • Special Repair Requirement
  • DTC P1238, P2119: Electric Throttle Control Actuator
    • DTC Logic
      • DTC Detection Logic
      • DTC Confirmation Procedure
    • Diagnosis Procedure
    • Special Repair Requirement
  • DTC P1239, P2135: TP Sensor
    • DTC Logic
      • DTC Detection Logic
      • DTC Confirmation Procedure
    • Diagnosis Procedure
    • Component Inspection
    • Special Repair Requirement
  • DTC P1290, P2100, P2103: Throttle Control Motor Relay
    • DTC Logic
      • DTC Detection Logic
      • DTC Confirmation Procedure
    • Diagnosis Procedure
  • DTC P1425: Cold Start Control
    • Description
    • DTC Logic
      • DTC Detection Logic
      • DTC Confirmation Procedure
    • Diagnosis Procedure
  • DTC P1550: Battery Current Sensor
    • DTC Logic
      • DTC Detection Logic
      • DTC Confirmation Procedure
    • Diagnosis Procedure
    • Component Inspection
  • DTC P1551, P1552: Battery Current Sensor
    • DTC Logic
      • DTC Detection Logic
      • DTC Confirmation Procedure
    • Diagnosis Procedure
    • Component Inspection
  • DTC P1553: Battery Current Sensor
    • DTC Logic
      • DTC Detection Logic
      • DTC Confirmation Procedure
    • Diagnosis Procedure
    • Component Inspection
  • DTC P1554: Battery Current Sensor
    • DTC Logic
      • DTC Detection Logic
      • DTC Confirmation Procedure
    • Component Function Check
    • Diagnosis Procedure
    • Component Inspection
  • DTC P1805: Brake Switch
    • DTC Logic
      • DTC Detection Logic
      • DTC Confirmation Procedure
    • Diagnosis Procedure
    • Component Inspection (Stop Lamp Switch)
    • Component Inspection (Stop Lamp Off Relay 1)
  • DTC P2A00, P2A03: A/F Sensor 1
    • DTC Logic
      • DTC Detection Logic
      • DTC Confirmation Procedure
    • Diagnosis Procedure
  • DTC P31A5: Can Error
    • DTC Logic
      • DTC Detection Logic
      • DTC Confirmation Procedure
    • Diagnosis Procedure
  • Cooling Fan
    • Component Function Check
    • Diagnosis Procedure
    • Component Inspection (Cooling Fan Motor)
    • Component Inspection (Cooling Fan Relay)
  • Electrical Load Signal
    • Description
    • Component Function Check
    • Diagnosis Procedure
  • Fuel Injector
    • Component Function Check
    • Diagnosis Procedure
    • Component Inspection
  • Fuel Pump
    • Component Function Check
    • Diagnosis Procedure
    • Component Inspection
  • Ignition Signal
    • Component Function Check
    • Diagnosis Procedure
    • Component Inspection (Ignition Coil with Power Transistor)
    • Component Inspection (Condenser)
  • Malfunction Indicator Lamp
    • Component Function Check
    • Diagnosis Procedure
  • Manifold Absolute Pressure Sensor
    • Component Function Check
    • Diagnosis Procedure
  • On Board Refueling Vapor Recovery (ORVR)
    • Component Function Check
    • Diagnosis Procedure
    • Component Inspection
  • Refrigerant Pressure Sensor
    • Component Function Check
    • Diagnosis Procedure
  • Sensor Power Supply2 Circuit
    • Description
      • Notes
      • Sensor power supply 1
      • Sensor power supply 2
    • Diagnosis Procedure
• Symptom Diagnosis
  • Engine Control System Symptoms
    • Symptom Table
      • System - Basic Engine Control System
      • System - Engine Mechanical & Other
  • Normal Operating Condition
    • Description
      • Fuel Cut Control (At No Load And High Engine Speed)
• Periodic Maintenance
  • Idle Speed
    • Inspection
      • Check Idle Speed
  • Ignition Timing
    • Inspection
      • Check Ignition Timing
  • EVAP Leak Check
    • Inspection
      • Notes
      • With Consult
      • Without Consult
  • Positive Crankcase Ventilation
    • Inspection
• Removal And Installation
  • ECM
    • Removal and Installation
      • Notes
      • Removal
      • Installation
• Service Data And Specifications (SDS)
  • Service Data And Specifications (SDS)
    • Idle Speed
    • Ignition Timing
    • Calculated Load Value
    • Mass Air Flow Sensor