Engine Controls - Self-Diagnostics - Turbo

• Introduction
• Self-Diagnostic System
  • Engine Applications
  • On-Board Diagnostics
    • Notes
    • Four Conditions For Diagnostics
    • Emissions Related Diagnostic Functions
    • Malfunction Indicator Light (MIL)
  • Misfire, Ho2S, Evaporative System, Catalytic Converter, Camshaft & Throttle Diagnostics
  • Retrieving & Clearing Diagnostic Trouble Codes
  • Powertrain Control Module Location
  • Programming
• Drive Cycles
  • Verifying Repairs Using Trip Driving Schedule
    • Notes
    • TRIP Driving Schedule
    • Flywheel Adaption
• Summary
• Diagnostic Trouble Code Definitions
• Component Locations
• Connector Identification
• Diagnostic Tests
  • P0010, P0013, P1649, P1650, P1655, P1656/ECM-6440: Camshaft Reset Valve
    • Notes
    • Fault Conditions
    • Possible Causes (Signal Too High)
    • Possible Causes (Signal Too Low)
    • Possible Causes (Signal Missing)
    • Diagnostic Procedure
  • P0013, P0014, P0340, P1330, P1332/ECM-644A: Camshaft Reset Valve
    • Fault Conditions
    • Possible Causes (Faulty Position)
    • Possible Cause (Faulty Control)
    • Possible Causes (Control Too Slow)
    • Diagnostic Procedure (Slow Control)
    • Diagnostic Procedure (Faulty Position)
    • Diagnostic Procedure (Faulty Control)
  • P0030-P0032, P0035/ECM-2810: Front Heated Oxygen Sensor, Preheating
    • Fault Conditions
    • Possible Causes (Signal Too High)
    • Possible Causes (Signal Too Low)
    • Possible Causes (Signal Missing)
    • Possible Cause (Faulty Signal)
    • Diagnostic Procedure (Signal Too High)
    • Diagnostic Procedure (Signal Too Low)
    • Diagnostic Procedure (Signal Missing)
  • P0036-P0038, P0141/ECM-2A2A: Rear Heated Oxygen Sensor, Preheating
    • Fault Conditions
    • Possible Causes (Signal Too High)
    • Possible Causes (Signal Too Low)
    • Possible Causes (Signal Missing)
    • Possible Cause (Faulty Signal)
    • Diagnostic Procedure (Signal Too High & Signal Too Low)
    • Diagnostic Procedure (Signal Missing)
    • Diagnostic Procedure (Faulty Signal)
  • P0100/ECM-130A: Intake Air Leakage
    • Fault Conditions
    • Possible Causes
    • Diagnostic Procedure
  • P0102, P0103/ECM-1300: Mass Air Flow Sensor
    • Fault Conditions
    • Possible Causes (Flow Too High)
    • Possible Causes (Flow Too Low)
    • Diagnostic Procedure
  • P0107, P0108/ECM-1000: Control Module
    • Fault Conditions
    • Possible Causes
    • Diagnostic Procedure
  • P0111-P0113/ECM-1100: Outside Temperature Sensor
    • Notes
    • Fault Conditions
    • Possible Causes (Signal Too High)
    • Possible Causes (Signal Too Low)
    • Diagnostic Procedure
  • P-0113/ECM-1200: Intake Air Temperature Sensor Inlet
    • Fault Conditions
    • Possible Causes (Signal Too High)
    • Possible Causes (Signal Too Low)
    • Diagnostic Procedure
  • P0116-P0118, P1481, P1482/ECM-2000: Engine Coolant Temperature Sensor
    • Notes
    • Fault Conditions
    • Possible Causes (Signal Too High)
    • Possible Causes (Signal Too Low)
    • Possible Causes (Faulty Signal)
    • Diagnostic Procedure
  • P0120, P0121/ECM-958F: Accelerator Pedal Position Sensor, Faulty Signal
    • Fault Conditions
    • Possible Causes
    • Diagnostic Procedure
  • P0121/ECM-959F: Throttle Unit Internal Fault, Faulty Signal
    • Fault Conditions
    • Possible Causes
    • Diagnostic Procedure
  • P0121/ECM-903C: Throttle Unit, Internal Fault
    • Fault Conditions
    • Possible Causes
    • Diagnostic Procedure
  • P0122, P0123/ECM-9530: Accelerator Pedal Position Sensor, Faulty Signal
    • Fault Conditions
    • Possible Cause (Signal Too High)
    • Possible Cause (Signal Too Low)
    • Possible Causes (Faulty Signal)
    • Diagnostic Procedure
  • P0128/ECM-201A: Thermostat
    • Fault Conditions
    • Possible Causes
    • Diagnostic Procedure
  • P0136-P0138/ECM-2A0A: Rear Heated Oxygen Sensor
    • Fault Conditions
    • Possible Causes (Signal Too High)
    • Possible Causes (Signal Missing)
    • Possible Causes (Faulty Signal)
    • Diagnostic Procedure (Signal Too High Or Missing)
    • Diagnostic Procedure (Faulty Signal)
  • P0171, P0172/ECM-262A: Long-Term Fuel Trim
    • Fault Conditions
    • Possible Causes (Upper Limit)
    • Possible Causes (Lower Limit)
    • Diagnostic Procedure
  • P0201-P0206, P0261-P0277/ECM-23X0: Fuel Injector X
    • Fault Conditions
    • Possible Causes (Signal Too High)
    • Possible Cause (Signal Too Low)
    • Possible Causes (Signal Missing)
    • Diagnostic Procedure
  • P0220/ECM-9150: Throttle Unit, Internal Fault
    • Fault Conditions
    • Possible Causes
    • Diagnostic Procedure
  • P0221/ECM-914F: Throttle Unit, Internal Fault
    • Fault Conditions
    • Possible Causes
    • Diagnostic Procedure
  • P0222, P0223/ECM-9520: Accelerator Pedal Position Sensor, Faulty Signal
    • Fault Conditions
    • Possible Cause (Signal Too High)
    • Possible Causes (Signal Too Low)
    • Possible Causes (Signal Missing)
    • Possible Causes(Faulty Signal)
    • Diagnostic Procedure
  • P0225/ECM-9160: Throttle Unit, Internal Fault
    • Fault Conditions
    • Possible Causes
    • Diagnostic Procedure
  • P0227, P0228/ECM-9540: Accelerator Pedal Position Sensor, 5 Volt Power Supply
    • Fault Conditions
    • Possible Cause (Signal Too High)
    • Possible Causes (Signal Too Low)
    • Diagnostic Procedure
  • P0231, P0232/ECM-2400: Fuel Pump Relay
    • Notes
    • Fault Conditions
    • Possible Cause (Signal Too High)
    • Possible Causes (Signal Too Low)
    • Diagnostic Procedure
  • P0234/ECM-6805: Turbocharger Control Valve
    • Fault Conditions
    • Possible Cause (Signal Too High)
    • Possible Causes (Signal Too Low)
    • Diagnostic Procedure
    • Checking & Adjusting Pressure Regulator (5-Cylinder Engine)
    • Checking & Adjusting Pressure Regulator (6-Cylinder Engine)
  • P0236/ECM-170F: Atmospheric Pressure Sensor/Boost Pressure Sensor Range Check
    • Fault Conditions
    • Possible Causes
    • Diagnostic Procedure
  • P0237, P0238/ECM-1600: Boost Pressure Sensor
    • Fault Conditions
    • Possible Causes (Signal Too High)
    • Possible Causes (Signal Too Low)
    • Diagnostic Procedure
  • P0243, P0245, P0246/ECM-6800: Turbocharger Control Valve
    • Fault Conditions
    • Possible Causes (Signal Too High)
    • Possible Cause (Signal Too Low)
    • Possible Causes (Signal Missing)
    • Diagnostic Procedure
  • P0300/ECM-3503: Misfire, At Least One Cylinder
    • Notes
    • Fault Conditions
    • Possible Causes
    • Diagnostic Procedure
  • P0301-P0306/ECM-35X3: Misfiring, Catalytic Converter Damage
    • Notes
    • Fault Conditions
    • Possible Causes
    • Diagnostic Procedure
  • P0327, P0328/ECM-3410: Front Knock Sensor
    • Fault Conditions
    • Possible Causes (Signal Too High)
    • Possible Causes (Signal Too Low)
    • Diagnostic Procedure
  • P0332, P0333/ECM-3420: Rear Knock Sensor
    • Fault Conditions
    • Possible Causes (Signal Too High)
    • Possible Causes (Signal Too Low)
    • Diagnostic Procedure
  • P0335/ECM-3100: Engine Speed Sensor
    • Fault Conditions
    • Diagnostic Procedure
  • P0342-P0344/ECM-3000: Camshaft Position Sensor
    • Fault Conditions
    • Possible Causes (Signal Too High)
    • Possible Causes (Signal Too Low)
    • Possible Causes (Faulty Signal)
    • Diagnostic Procedure
  • P0352-P0356, P1350-P1361/ECM-33X0: Ignition Coil For Cylinder X, Signal
    • Fault Conditions
    • Possible Cause (Signal Too High)
    • Possible Cause (Signal Too Low)
    • Possible Causes (Signal Missing)
    • Diagnostic Procedure
  • P0422/ECM-4801: Three-Way Catalytic Converter Efficiency
    • Fault Conditions
    • Possible Causes
    • Diagnostic Procedure
  • P0440/ECM-4008: Canister Purge Valve
    • Fault Conditions
    • Possible Causes
    • Checking Wiring And Terminals
    • Testing The Fuel Tank System (General Information)
    • Checking The Engine Coolant Temperature
  • P0442/ECM-430D: Leak Diagnosis, Small Leak
    • Notes
    • Fault Conditions
    • Possible Causes
    • Diagnostic Procedure
    • Checking Fuel Tank System Pressurization (P0442/ECM-430D)
    • Verification
  • P0443, P0445/ECM-4000: Canister Purge Valve
    • Fault Conditions
    • Possible Causes (Signal Too High)
    • Possible Cause (Signal Too Low)
    • Possible Cause (Signal Missing)
    • Diagnostic Procedure
  • P0446/ECM-4019: EVAP Canister Shut-Off Valve Closed
    • Notes
    • Fault Conditions
    • Possible Causes
    • Diagnostic Procedure
  • P0447, P0448/ECM-4010: EVAP Canister Shut-Off Valve
    • Notes
    • Fault Conditions
    • Possible Causes (Signal Too High)
    • Possible Cause (Signal Too Low)
    • Possible Causes (Signal Missing)
    • Diagnostic Procedure
  • P0451-P0453/ECM-4020: Fuel Tank Pressure Sensor
    • Notes
    • Fault Conditions
    • Possible Causes (Signal Too High)
    • Possible Causes (Signal Too Low)
    • Possible Causes (Faulty Signal)
    • Diagnostic Procedure
  • P0454, P0455/ECM-4308: Leak Diagnosis, Large Leak
    • Notes
    • Fault Conditions
    • Possible Causes (Signal Too Low)
    • Possible Causes (Faulty Signal)
    • Diagnostic Procedure
    • Checking Vacuum Downstream Of Canister Purge Valve
    • Checking Vacuum At EVAP Canister
    • Checking Vacuum To Canister Purge Valve
    • Checking Hose Between Canister Purge Valve & EVAP Canister
    • Checking EVAP Canister
    • Checking Hose Between Fuel Tank & EVAP Canister
    • Checking Fuel Tank Pressurization (P0454, P0455/ECM-4308)
    • Verification
  • P0456/ECM-430C: Leak Diagnosis, Smallest Leak
    • Fault Conditions
    • Possible Causes
    • Check Wiring And Terminals
    • Testing The Fuel Tank System (General Information)
    • Checking The Engine Coolant Temperature
  • P0461-P0464/ECM-4050: Fuel Level Sensor
    • Notes
    • Fault Conditions
    • Possible Causes
    • Diagnostic Procedure
  • P0480/ECM-6110: Engine Cooling Fan Relay, Low Speed
    • Fault Conditions
    • Possible Causes (Signal Too High)
    • Possible Causes (Signal Too Low)
    • Possible Causes (Signal Missing)
    • Diagnostic Procedure
  • P0481, P1486, P1487/ECM-6120: Engine Cooling Fan Relay, High Speed
    • Fault Conditions
    • Possible Causes(Signal Too High)
    • Possible Causes(Signal Too Low)
    • Possible Causes(Signal Missing)
    • Diagnostic Procedure
  • P0506, P0507/ECM-990A: Control Module, Internal Fault
    • Fault Conditions
    • Possible Causes
    • Diagnostic Procedure
  • P0560, P0562, P0563/ECM-8010: System Relay Output
    • Notes
    • Fault Conditions
    • Possible Causes (Signal Too High)
    • Possible Causes (Signal Too Low)
    • Possible Causes (Faulty Signal)
    • Diagnostic Procedure
  • P0571-P0573, P1513/ECM-9400: Brake Pedal Position Sensor, Faulty Signal
    • Fault Conditions
    • Possible Causes (Signal Too High)
    • Possible Causes (Signal Too Low)
    • Possible Causes (Signal Missing)
    • Possible Causes (Faulty Signal)
    • Diagnostic Procedure
  • P0600/ECM-E000: Control Unit, Internal Fault
    • Fault Conditions
    • Possible Causes
    • Diagnostic Procedure
  • P0602/ECM-531D: Control Module Internal Fault
    • Fault Conditions
    • Possible Causes
    • Diagnostic Procedure
  • P0630, P1670, P1680/ECM-720A: Immobilizer Communication
    • Fault Conditions
    • Possible Causes (Faulty Signal)
    • Possible Cause (Signal Missing)
    • Diagnostic Procedure
    • Notes On Engine Immobilizer Control Module
    • Notes On Replacing PCM (ECM)
  • P0645, P1646, P1647/ECM-6000: A/C Relay Signal
    • Fault Conditions
    • Possible Causes (Signal Too High)
    • Possible Cause (Signal Too Low)
    • Possible Causes (Signal Missing)
    • Diagnostic Procedure
  • P0650, P1625, P1626/ECM-6B00: Mil Signal
    • Fault Conditions
    • Possible Cause (Signal Too High)
    • Possible Cause (Signal Too Low)
    • Possible Causes (Signal Missing)
    • Diagnostic Procedure
  • P0805, P0807, P0808/ECM-9300: Clutch Pedal Position Sensor, Faulty Signal
    • Fault Conditions
    • Possible Cause (Signal Too High)
    • Possible Causes (Signal Too Low)
    • Possible Causes (Faulty Signal)
    • Diagnostic Procedure
  • P1132-P1134/ECM-280A: Front Heated Oxygen Sensor, Faulty Signal
    • Fault Conditions
    • Possible Causes (Signal Too High)
    • Possible Causes (Signal Too Low)
    • Possible Causes (Signal Missing)
    • Possible Causes (Faulty Signal)
    • Diagnostic Procedure (Signal Too High)
    • Diagnostic Procedure (Signal Too Low)
    • Diagnostic Procedure (Signal Faulty)
    • Diagnostic Procedure (Signal Missing)
  • P1139/ECM-2A1A: Rear Heated Oxygen Sensor Aging
    • Fault Conditions
    • Possible Causes
    • Diagnostic Procedure
  • P1171, P1172/ECM-261A: Long-Term Fuel Trim
    • Fault Conditions
    • Possible Causes (Upper Limit)
    • Possible Causes
    • Diagnostic Procedure
  • P1174, P1175/ECM-260A: Long-Term Fuel Trim
    • Fault Conditions
    • Possible Causes (Upper Limit)
    • Possible Causes (Lower Limit)
    • Diagnostic Procedure
  • P1177-P1179/ECM-268A: Long-Term Fuel Trim
    • Fault Conditions
    • Possible Causes (Upper Limit)
    • Possible Causes (Lower Limit)
    • Diagnostic Procedure
  • P1238/ECM-6806: Turbocharger Control Valve
    • Fault Conditions
    • Possible Cause (Signal Too High)
    • Possible Causes (Signal Too Low)
    • Diagnostic Procedure
  • P1325/ECM-34F0: Knock Sensor, Test Pulse
    • Fault Conditions
    • Possible Cause
    • Diagnostic Procedure
  • P1326/ECM-34E0: Knock Sensor Offset
    • Fault Conditions
    • Possible Cause
    • Diagnostic Procedure
  • P1329/ECM-3400: Knock Sensor, Test Pulse
    • Fault Conditions
    • Possible Cause
    • Diagnostic Procedure
  • P1440/ECM-4338: Fuel Tank Filler Cap Missing
    • Notes
    • Fault Conditions
    • Possible Causes (Signal Too Low)
    • Possible Causes (Faulty Signal)
    • Diagnostic Procedure
  • P1520/ECM-917F: Accelerator Pedal Position Sensor, Internal Fault
    • Fault Conditions
    • Possible Causes
    • Diagnostic Procedure
  • P1520/ECM-9180: Accelerator Pedal Position Sensor
    • Fault Conditions
    • Possible Causes
    • Diagnostic Procedure
  • P1525/ECM-91DF: Stop Lamp Switch
    • Fault Conditions
    • Possible Causes
    • Diagnostic Procedure
  • P1526/ECM-980A: Control Module, Internal Fault
    • Fault Conditions
    • Possible Cause
    • Diagnostic Procedure
  • P1528/ECM-91CF: Engine Control Module Internal Fault
    • Fault Conditions
    • Possible Causes
    • Diagnostic Procedure
  • P1550, P1551, P1633/ECM-510F: Vehicle Speed Signal
    • Fault Conditions
    • Possible Causes (Signal High Or Signal Low)
    • Possible Causes (Signal Missing)
    • Diagnostic Procedure
  • P1560-P1562, P1660-P1663/ECM-928C: Control Module, Communication Problems
    • Fault Conditions
    • Possible Cause (Signal Too High)
    • Possible Cause (Signal Too Low)
    • Possible Causes (Signal Missing)
    • Diagnostic Procedure
  • P1600/ECM-9190: Throttle Unit, Internal Fault
    • Fault Conditions
    • Possible Causes
    • Diagnostic Procedure
  • P1601/ECM-91F0: Throttle Unit, Internal Fault
    • Fault Conditions
    • Possible Causes
    • Diagnostic Procedure
  • P1602/ECM-91B7: Throttle Unit, Internal Fault
    • Fault Conditions
    • Possible Causes
    • Diagnostic Procedure
  • P1603/ECM-91A7: Throttle Unit, Internal Fault
    • Fault Conditions
    • Possible Causes
    • Diagnostic Procedure
  • P1604/ECM-904C: Mil Requested By Throttle Unit
    • Fault Conditions
    • Possible Cause
    • Diagnostic Procedure
  • P1604/ECM-910E: Throttle Unit, Internal Fault
    • Fault Conditions
    • Possible Cause
    • Diagnostic Procedure
  • P1605/ECM-911A: Throttle Unit Communication
    • Fault Conditions
    • Possible Causes
    • Diagnostic Procedure
  • P1606/ECM-912A: Engine Control Module Communication
    • Fault Conditions
    • Possible Causes
    • Diagnostic Procedure
  • P1607/ECM-91E0: Battery Voltage
    • Fault Conditions
    • Possible Causes
    • Diagnostic Procedure
  • P1608-P1660/ECM-903F: Throttle Unit, Internal Fault
    • Fault Conditions
    • Possible Causes
    • Diagnostic Procedure
  • P1611-P1613/ECM-902A: Communication Control Module, Communication Problems
    • Fault Conditions
    • Possible Causes
    • Fault Symptoms
    • Diagnostic Procedure
  • P1614/ECM-913F: Engine Control Module Internal Fault
    • Fault Conditions
    • Possible Causes
    • Diagnostic Procedure
  • P1615/ECM-901E: Control Module Internal Fault
    • Fault Conditions
    • Possible Causes
    • Diagnostic Procedure
  • P1618/ECM-530D: DTC In Another Control Module
    • Fault Conditions
    • Possible Cause
    • Diagnostic Procedure
  • P1620-P1622/ECM-6300: ETS Lamp Output
    • Fault Conditions
    • Possible Cause(Signal Too High)
    • Possible Cause(Signal Too Low)
    • Possible Cause(Signal Missing)
    • Diagnostic Procedure
  • P1623/ECM-6310: Mil Illuminates In The Event Of An ETS Fault
    • Fault Conditions
    • Possible Causes
    • Diagnostic Procedure
  • P1627-P1629/ECM-901A: Communication Control Module, Communication Problems
    • Fault Conditions
    • Possible Causes
    • Diagnostic Procedure
  • P1630/ECM-E003: Control Unit, Internal Fault
    • Fault Conditions
    • Possible Causes
    • Diagnostic Procedure
  • P1631/ECM-530B: Control Module Communication
    • Fault Conditions
    • Possible Causes
    • Diagnostic Procedure
  • P1632/ECM-710A: Real Time Clock
    • Fault Conditions
    • Possible Cause
    • Diagnostic Procedure
  • P1635, P1636/ECM-7180: Temperature Sensor Control Module
    • Fault Conditions
    • Possible Cause
    • Diagnostic Procedure
  • P1637, P1638/ECM-715D: Temperature Sensor Control Module
    • Fault Conditions
    • Possible Causes
    • Diagnostic Procedure
  • P1638/ECM-716D: Temperature Sensor Control Module
    • Fault Conditions
    • Possible Cause
    • Diagnostic Procedure
  • P1651/ECM-981A: Control Module, Internal Fault
    • Fault Conditions
    • Possible Causes
    • Diagnostic Procedure
  • P1652/ECM-982A: Control Module, Internal Fault
    • Fault Conditions
    • Possible Causes
    • Diagnostic Procedure
  • P1672, P1673/ECM-8410: 5 Volt Power Supply
    • Fault Conditions
    • Possible Causes (Signal Too High)
    • Possible Causes (Signal Too Low)
    • Diagnostic Procedure
  • P3583/ECM-904D: Pedal Sensor Fault
    • Fault Conditions
    • Possible Causes
    • Diagnostic Procedure
  • EFI-4008: Canister Purge Valve Leakage
    • Fault Conditions
    • Possible Cause
    • Diagnostic Procedure
  • EFI-5000: Air Conditioning Pressure Sensor
    • Fault Conditions
    • Possible Causes (Signal Too High)
    • Possible Causes (Signal Too Low)
    • Possible Causes (Signal Missing)
    • Possible Causes (Faulty Signal)
    • Diagnostic Procedure
  • ECM-XXXX: Unknown DTC For The Current Control Module Version
• Connecting & Disconnecting Breakout Box
  • Notes
  • Connecting
  • Disconnecting
• Checking Wiring & Connections
  • Contact Resistance & Oxidation
  • Cleaning Female Sockets & Male Terminals
  • Greasing Terminals