Trouble Code Identification Charts

PREVIA CODE IDENTIFICATION

Code No.

System Affected

Probable Cause

12 & 13

RPM Signal

Distributor/Ignitor Or Ckt, Starter Ckt, ECU

Ignition Signal

Ignitor Or Ckt To ECU, ECU

O2 Sensor Signal

O2 Sensor Or Ckt, O2 Sensor Heater, ECU

Coolant Temp. Sensor Signal

Coolant Temp. Sensor Or Ckt, ECU

24 ⁽¹⁾

IAT Sensor Signal

Intake Air Temp. Sensor Or Ckt, ECU

Lean Air/Fuel Mixture

Loose Ground, Injector Or Ckt, O2 Sensor Or Ckt, Fuel Pressure, Ignition Sys, Coolant Temp. Sensor, Airflow Meter, ECU

26 ⁽²⁾

Rich Air/Fuel Mixture

Loose Ground, Injector Or Ckt, O2 Sensor Or Ckt, Fuel Pressure, Cold Start Injector Or Ckt, Coolant Temp. Sensor, Airflow Meter, Compression Pressure, ECU

27 ⁽²⁾

Sub-O2 Sensor Signal

Sub-O2 Sensor Or Ckt, ECU

31 & 32

Airflow Meter Signal

Airflow Meter Or Ckt, ECU

41 ⁽¹⁾

TP Sensor Signal

Throttle Position Sensor Or Ckt, ECU

42 ⁽³⁾

VSS Signal

Vehicle Speed Sensor Or Ckt, ECU

43 ⁽³⁾

Starter Signal

Starter Signal Ckt, Ignition Switch Or Ckt, ECU

51 ⁽³⁾

Switch Condition

A/C Switch/Amplifier Ckt, Neutral/Start Switch Or Ckt, TPS Or Ckt, ECU Signal

Knock Sensor Signal

Knock Sensor Or Ckt, ECU

Knock Sensor Ctrl (ECU)

ECU

71 ⁽²⁾

EGR System Malfunction

EGR Sys, EGR Temp. Sensor Or Ckt, EGR-VSV, ECU

⁽¹⁾	CHECK ENGINE light comes on only for Calif. models.

⁽²⁾	Used only on Calif. models.

⁽³⁾	CHECK ENGINE light will not come on when code is set.