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Trouble Code Identification

TROUBLE CODE IDENTIFICATION

Code
N/A
System Affected (1),(2)Normal Mode (1),(2)Test Mode Probable Cause
12  RPM Signal ON N/A Distributor, Starter Or Circuit, ECM
13  RPM Signal ON ON Distributor Or Circuit,ECM
14  Ignition Signal ON N/A Ignitor Or Circuit To ECM, ECM
16 (3) A/T Control Signal ON N/A ECM Or Circuit
21  Oxygen Sensor Signal ON N/A Oxygen Sensor/Heater Or Circuit, ECM
22  Engine Coolant Temperature Sensor Signal ON ON Engine Coolant Temp. Sensor Or Circuit, ECM
24  Intake Air Temperature Sensor Signal ON ON Intake Air Temp. SensorOr Circuit, ECM
25  Lean Air/Fuel Mixture ON ON Loose Ground, Injector Or Circuit, Fuel Pressure, Ignition System, Engine Coolant Temp. Sensor, Airflow Meter, ECM
26  Rich Air/Fuel Mixture ON ON Loose Ground, Injector Or Circuit, Oxygen Sensor/Heater Or Circuit, Fuel Pressure,Cold Start Injector Or Circuit, Engine CoolantTemp. Sensor, Airflow Meter, Compression Pressure, ECM
27 (4) Sub-Oxygen Sensor Signal ON ON Sub-Oxygen Sensor/ Heater Or Circuit, ECM
31  Airflow Meter ON ON Airflow Meter Or Circuit, ECM
32  Airflow Meter ON ON Airflow Meter Or Circuit, ECM
35  BARO Sensor ON ON ECM
41  Throttle Position Sensor Signal ON (5) ON Throttle Position Sensor Or Circuit, ECM
42  Vehicle Speed Sensor Signal ON OFF Vehicle Speed Sensor OrCircuit, ECM
43  Starter Signal N/A OFF Starter Signal Circuit,Ignition Switch Or Circuit, Main Relay, ECM
51  Switch Condition Signal N/A OFF A/C Switch Circuit, Park/Neutral Switch Or Circuit, TPS Or Circuit, ECM
52  Knock Sensor Signal ON N/A Knock Sensor Or Circuit, ECM
53  Knock Control Signal ON N/A ECM
71  EGR System Malfunction ON ON EGR System, EGR Temp. Sensor Or Circuit, EGR-VSV, ECM
(1) Only Normal Mode is used on 2.4L models. Both modes are used on 3.0L models. Information in Test Mode only applies to 3.0L models.
(2) 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.
(3) Applies only to models with electronic-controlled automatic transmission.
(4) Applies to California models only.
(5) The MIL will be illuminated on California models only.