Trouble Code Identification

TROUBLE CODE IDENTIFICATION

Code

System Affected

⁽¹⁾ MIL In Normal Mode

⁽¹⁾ MIL InTest Mode

Probable Cause

RPM Signal

N/A

Camshaft Position Sensor, Starter Or Circuit, ECM

RPM Signal

⁽²⁾

⁽³⁾

Camshaft Position Sensor Or Circuit ECM

Ignition Signal

N/A

Ignitor Or IGF1 Circuit To ECM, ECM

Ignition Signal

N/A

Ignitor Or IGF2 Circuit To ECM, ECM

16 ⁽⁴⁾

A/T Cntl. Signal

N/A

ECM Or Circuit

O2 Sensor Signal

O2 Sensor (Left Bank) Or Circuit, ECM

Engine Coolant Temp. Sens Sgnl

Engine Coolant Temperature Sensor Or Circuit, ECM

Intake Air Temp. Signal

Intake Air Temperature Sensor Or Circuit, ECM

Lean Air/ Fuel Mixture

Injector Or Ckt., O2 Sensor Or Ckt. Fuel Pressure, Ignition System, Vacuum Leak, Compression Pressure, ECM

Rich Air/ Fuel Mixture

Injector Or Ckt., O2 Sensor Or Ckt. Fuel Pressure, Ignition System, Compression Pressure, ECM

Sub-O2 Sensor Signal

Sub-O2 Sensor (Left Bank) Or Circuit, ECM

O2 Sensor Signal

O2 Sensor (Right Bank) Or Circuit, ECM

Sub-O2 Sensor Signal

Sub-O2 Sensor (Right Bank) Or Circuit, ECM

Airflow Meter

N/A

Airflow Meter Or Ckt., ECM

BARO Sensor

ECM

Throttle Position Sensor Signal

Throttle Position Sensor Or Circuit, ECM

Vehicle Sensor Signal

OFF

Vehicle Speed Sensor Or Circuit, ECM

Starter Signal

N/A

OFF

Starter Signal Circuit Starter Relay, Ignition Sw. Or Circuit, ECM

Sub-ThrtlPosition Sensor Signal

OFF

Sub-Throttle Position Sensor Or Circuit, ECM

Switch Condition Signal

N/A

OFF

A/C Switch Circuit, Park/Neutral Switch Or Circuit, TPS Or Circuit, ECM

52 ⁽⁵⁾

Knock Sensor Signal

N/A

Knock Sensor Or Or Circuit, ECM

Knock Control Signal

N/A

ECM

55 ⁽⁶⁾

Knock Sensor Signal

N/A

Rear Knock Sensor Or Or Circuit, ECM

EGR System Malfunc.

EGR System, EGR Temperature Sensor Or Circuit EGR-VSV, ECM

Fuel Pump Control Signal

OFF

Fuel Pump ECU Or Ckt., Fuel Pump, ECM Power Source Or ECM

⁽¹⁾	ON indicates MIL on instrument panel will be illuminated N/A indicates item is not included in malfunction diagnosis when using this mode. OFF indicates MIL on instrument panel will not be illuminated even if malfunction is detected.

⁽²⁾	The MIL will be illuminated only if no "NE" signal is sent to ECM with engine at approximately 1000 RPM.

⁽³⁾	The MIL will be illuminated only if "NE" signal does not pulse 12 times to ECM during interval between "G1" and "G2" pulses.

⁽⁴⁾	Applies only to models with electronic controlled automatic transmission.

⁽⁵⁾	Front knock sensor may be referred to as No. 1 knock sensor.

⁽⁶⁾	Rear knock sensor may be referred to as No. 2 knock sensor.