Engine Controls

DATA TROUBLE CODE: 11
DIAGNOSIS DESCRIPTION: Heated Oxygen Sensor (Front)
CHECK ITEM:

- Harness and connector
- Fuel pressure
- Injectors
- Intake air leaks
- Heated Oxygen Sensor (Front)

DATA TROUBLE CODE: 12
DIAGNOSIS DESCRIPTION: Volume Air Flow Sensor
CHECK ITEM:

- Harness and connector
- Volume Air Flow Sensor

DATA TROUBLE CODE: 13
DIAGNOSIS DESCRIPTION: Intake Air Temperature Sensor
CHECK ITEM:

- Harness and connector
- Intake Air Temperature Sensor

DATA TROUBLE CODE: 14
DIAGNOSIS DESCRIPTION: Throttle Position Sensor
CHECK ITEM:

- Harness and connector
- Throttle Position Sensor
- Idle Position Switch

DATA TROUBLE CODE: 15
DIAGNOSIS DESCRIPTION: Motor Position Sensor
CHECK ITEM:

- Harness and connector
- Motor Position Sensor

DATA TROUBLE CODE: 21
DIAGNOSIS DESCRIPTION: Engine Coolant Temperature Sensor
CHECK ITEM:

- Harness and connector
- Engine Coolant Temperature Sensor

DATA TROUBLE CODE: 22
DIAGNOSIS DESCRIPTION: Crankshaft Position Sensor
CHECK ITEM:

- Harness and connector
- Crankshaft Position Sensor (Distributor Assembly)

DATA TROUBLE CODE: 23
DIAGNOSIS DESCRIPTION: Camshaft Position Sensor
CHECK ITEM:

- Harness and connector
- Camshaft Position Sensor (Distributor Assembly)

DATA TROUBLE CODE: 24
DIAGNOSIS DESCRIPTION: Vehicle Speed Sensor
CHECK ITEM:

- Harness and connector
- Vehicle Speed Sensor

DATA TROUBLE CODE: 25
DIAGNOSIS DESCRIPTION: Barometric Pressure Sensor
CHECK ITEM:

- Harness and connector
- Barometric Pressure Sensor

DATA TROUBLE CODE: 41
DIAGNOSIS DESCRIPTION: Injector
CHECK ITEM:

- Harness and connector
- Injector coil resistance

DATA TROUBLE CODE: 42
DIAGNOSIS DESCRIPTION: Fuel Pump
CHECK ITEM:

- Harness and connector
- Control Relay

DATA TROUBLE CODE: 43
DIAGNOSIS DESCRIPTION: Exhaust Gas Recirculation
CHECK ITEM:

- Harness and connector
- Exhaust Gas Recirculation Temperature Sensor
- Exhaust Gas Recirculation Valve
- Exhaust Gas Recirculation Control Solenoid Valve
- Exhaust Gas Recirculation Valve control vacuum

DATA TROUBLE CODE: 59
DIAGNOSIS DESCRIPTION: Heated Oxygen Sensor (Rear)
CHECK ITEM:

- Harness and connector
- Fuel pressure
- Injectors
- Intake air leaks
- Heated oxygen sensor (Rear)

NOTE: A steady output signal (no oscillation of voltage) indicates a defective Engine Control Module.
A continuous output signal (steady oscillation of voltage) indicates a normal system.