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Trouble Code Identification

TROUBLE CODE IDENTIFICATION

Code System Affected (1) Normal Mode (1) Test Mode Probable Cause
12  RPM Signal ON N/A Camshaft Or Crankshaft Position Sensors Or Circuits, Starter Or Circuit, ECM
13  RPM Signal (3) (2) Camshaft Or Crankshaft Position Sensors Or Circuit, ECM
14  Ignition Signal ON N/A Ignitor Or Circuit To ECM, ECM
16 (4) A/T Control Signal ON N/A ECM
21  Oxygen Sensor Signal ON (5) 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. Sensor Or Circuit, ECM
25  Lean Air/Fuel Mixture ON ON Injector Or Circuit, Oxygen Sensor/Heater Or Circuit, Fuel Pressure, Ignition System, Compression Pressure Airflow Meter, ECM
26  Rich Air/Fuel Mixture ON ON Injector Or Circuit, Oxygen Sensor/Heater Or Circuit, Fuel Pressure, Ignition System, Airflow Meter Compression Pressure, ECM
27  Sub-Oxygen Sensor Signal ON (5) Sub-Oxygen Sensor/ Heater Or Circuit, ECM
31  Airflow Meter ON N/A Airflow Meter Or Circuit, ECM
34  Turbocharging Pressure Signal ON N/A Wastegate VSV Or Circuit, Wastegate Actuator, ECM
35  Turbo Pressure BARO Sensor ON ON Turbo Pressure Sensor Or Circuit, ECM
41  Throttle Position Sensor Signal ON ON Throttle Position Sensor Or Circuit, ECM
42  Vehicle Speed Sensor Signal OFF OFF Vehicle Speed Sensor Or Circuit, ECM
43  Starter Signal N/A OFF Starter Signal Circuit, Starter Relay, Ignition Switch Or Circuit, ECM
47  Sub-Throttle Position Sensor Signal OFF ON Sub-Throttle Position Sensor Or Circuit, ECM
51  Switch Condition Signal N/A OFF A/C Switch Circuit, Park/Neutral Switch Or Circuit, TPS Or Circuit, ECM
52  Front Knock Sensor Signal ON N/A Front Knock Sensor Or Circuit, ECM
53  Knock Control Signal ON N/A ECM
55  Rear Knock Sensor Signal ON N/A Rear Knock Sensor Or Circuit, ECM
71  EGR System Malfunction ON ON EGR System, EGR Temp. Sensor Or Circuit, EGR-VSV, ECM
78  Fuel Pump Control Signal OFF ON Fuel Pump ECU Or Circuit, 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 if "NE" signal does not pulse 12 times to ECM during interval between "G1" and "G2" pulses.
(3) The MIL will be illuminated if no "NE" signal to ECM is received with engine at 1000 RPM or if deviation in "G", "G1", "G2" or "NE" signal exists during idling with engine warm.
(4) Applies only to models with electronic-controlled automatic transaxle.
(5) The MIL will be illuminated if problem exists in oxygen sensor circuit. The MIL will not be illuminated if problem exists in oxygen sensor heater or circuit.
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