Code Identification

CODE IDENTIFICATION

Code No.

System Affected

Probable Cause

12 & 13

RPM Signal

Distributor Or Circuit, Starter Circuit, ECU

Ignition Signal

Distributor Or Circuit To ECU, ECU

Oxygen Sensor Signal

Oxygen Sensor Or Circuit, ⁽¹⁾ Oxygen Sensor Heater, ECU

Coolant Temp. Sensor Signal

Coolant Temp. Sensor Or Circuit, ECU

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, ⁽²⁾ Airflow Meter/Vacuum Sensor

Rich Air/Fuel Mixture

Fuel Pressure, ⁽²⁾ Airflow Meter/Vacuum Sensor, 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 (2.2L)

Vacuum Sensor Signal

Vacuum Sensor Or Circuit, ECU

31 (2.0L)

Airflow Meter Signal

Airflow Meter Or Circuit, ECU

32 ⁽¹⁾

Airflow Meter Signal

Airflow Meter Or Circuit, ECU

34 & 35 ⁽¹⁾

Turbocharger Pressure Sensor

Turbocharger Pressure Sensor Or Circuit, ECU

Throttle Position Sensor Signal

Throttle Position Sensor Or Circuit, ECU

Vehicle Speed Sensor Signal

Vehicle Speed Sensor Or Circuit, ECU

Starter Signal

Starter Signal Circuit, Ignition Switch Or Circuit, ECU

Switch Condition Signal

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

52 ⁽¹⁾

Knock Sensor Signal

Knock Sensor Or Circuit, ECU

53 ⁽¹⁾

Knock Sensor Control (ECU)

ECU

71 ⁽⁴⁾

EGR System Malfunction

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

⁽¹⁾	Used on 3S-GTE only.

⁽²⁾	Airflow meter used on 3S-GTE and vacuum sensor on 5S-FE.

⁽³⁾	Used on Calif. 5S-FE only.

⁽⁴⁾	Used on Calif. 3S-GTE and all 5S-FE.