Code Identification

CODE IDENTIFICATION

Code No.

System Affected

Probable Cause

11 ⁽¹⁾

ECU Power Supply

Ignition Switch Or Circuit, Main Relay Or Circuit, ECU

12 & 13

RPM Signal

Distributor Or Circuit, Starter Circuit, ECU

Ignition Signal

Ignitor Or Circuit To ECU, ECU

Electronic Controlled Transaxle Signal

Transaxle ECU Or Wiring Circuit

Oxygen Sensor Signal

Oxygen Sensor Or Circuit, ECU

Coolant Temp. Sensor Signal

Coolant Temp. Sensor Or Circuit, ECU

24 ⁽²⁾

Intake Air Temp. Sensor Signal

Intake Air Temp. Sensor Or Circuit, ECU

Lean Air/Fuel Mixture

ECU, Injector Or Circuit, Oxygen Sensor Or Circuit, Fuel Pressure, Ignition System, Coolant Temp. Sensor, Airflow Meter

Rich Air/Fuel Mixture

Fuel Pressure, Airflow Meter, ECU, Injector Or Circuit, Oxygen Sensor Or Circuit, Cold Start Injector Or Circuit, Coolant Temp. Sensor

27 ⁽³⁾

Sub-Oxygen Sensor Signal

Sub-Oxygen Sensor Or Circuit, ECU

31 & 32

Airflow Meter Signal

Airflow Meter Or Circuit, ECU

41 ⁽²⁾

Throttle Position Sensor Signal

Throttle Position Sensor Or Circuit, ECU

42 ⁽¹⁾

Vehicle Speed Sensor Signal

Vehicle Speed Sensor Or Circuit, ECU

43 ⁽¹⁾

Starter Signal

Starter Signal Circuit, Ignition Switch Or Circuit, Main Relay Or Circuit, ECU

51 ⁽¹⁾

Switch Condition Signal

A/C Switch Circuit, ECU, Neutral/Start Switch Or Circuit, TPS Or Circuit

Knock Sensor Signal

Knock Sensor Or Circuit, ECU

Knock Sensor Control (ECU)

ECU

71 ⁽³⁾

EGR System Malfunction

EGR System, EGR Temp. Sensor Or Circuit, ECU, EGR VSV

⁽¹⁾	CHECK ENGINE light will not come on when code is set.

⁽²⁾	CHECK ENGINE light comes on when code sets (Calif. only).

⁽³⁾	Used on Calif. only.