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Diagnostic Trouble Code Definitions

DIAGNOSTIC TROUBLE CODE DEFINITIONS

DTC Description
12 System Normal
13  Oxygen Sensor Circuit
14  Coolant (Water) Temp Sensor (WTS) Indication Low
15  Coolant (Water) Temp Sensor (WTS) Indication High
21  Throttle Position Sensor Circuit Indication High
22  Throttle Position Sensor Circuit Indication Low
23  Air Temp Sensor (ATS) Circuit Indication Low
24  Vehicle Speed Sensor
25  Air Temp Sensor (ATS) Circuit Indication High
31  Pressure Sensor (PS) Circuit Voltage High
32  Pressure Sensor (PS) Circuit Voltage Low
41 (1) No Ignition Signal
42  Crank Angle Sensor
44 (2) Idle Switch Circuit Open Or Misadjusted
45 (2) Idle Switch Circuit Open Or Misadjusted
51 (3) EGR System Circuit Check
53 (2)(3) ECM Ground Circuit Check
54 (2)(4) Gear Position (5Th Switch) Circuit Grounded
71 (3)(5) Test Switch Circuit
(1) To check code when engine fails to start, crank engine, then with ignition still on, install fuse in diagnostic terminal of fuse block.
(2) When code occurs, ECM will not activate CHECK ENGINE light while engine is running. When problem is fixed, memory of defective area will be erased from ECM.
(3) Applicable to California models only.
(4) Not applicable to California models.
(5) Circuit is grounded for 5 seconds when driving at least 25 MPH.
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