2 and 3 Digit Codes
NOTES:
The following information is provided for those with no access to a scan tool. In order to properly diagnose and repair this vehicle, a scan tool should be used.
A set trouble code does not identify the failed component. A set trouble code indicates that the Powertrain Control Module (PCM) has detected a condition outside of the limits set for that circuit.
For corresponding test procedures, SEE DIAGNOSTIC CHARTS/Trouble Code Tests/Test TC 1A. TC-1A CODE TO TC TEST CHART (Checking For Trouble Codes)
FAULT CODE NO. SCAN TOOL DISPLAY DESCRIPTION OF FAULT CONDITION
11 IGN reference signal No distributor reference signal detected during engine cranking.
13+** Slow change in MAP signal MAP output change is slower and/or smaller than expected at idle.
or
MAP pneumatic change No difference recognized between engine MAP reading and barometric pressure reading at start-up.
14+** MAP voltage too low MAP sensor input below minimum acceptable voltage.
or
MAP voltage too high MAP sensor input above maximum acceptable voltage.
15** No vehicle speed signal No vehicle distance (speed) sensor signal detected during road load conditions.
17 Engine is cold too long Engine coolant temperature remains below normal operating temperatures during vehicle travel (thermostat).
21** Oxygen sensor signal Neither rich nor lean condition is detected from the oxygen sensor input.
or
02 sensor shorted high Oxygen sensor input voltage maintained above normal operating range.
22+** Coolant sensor voltage low Sensor input below the minimum acceptable
or voltage.
Coolant sensor voltage high Sensor input above the maximum acceptable voltage.
24+** TPS voltage low Sensor input below the minimum acceptable
or voltage.
TPS voltage high Sensor input above the maximum acceptable voltage.
25** IAC motor circuits An open or shorted condition detected in one or more of the IAC control circuits.
27 Injector control circuit Injector output driver does not respond properly to the control signal.
31** Purge solenoid circuit An open or shorted condition detected in the purge solenoid circuit.
32** EGR solenoid circuit An open or shorted condition detected in the EGR transducer solenoid
or circuit.
EGR system failure Required change in fuel/air ratio not detected during diagnostic test.
33 A/C clutch relay circuit An open or shorted condition detected in the A/C clutch relay circuit.
34 Speed control solenoid circuits An open or shorted condition detected in the speed control vacuum or vent solenoid circuit.
35 Radiator fan relay An open or shorted condition detected in the radiator fan relay circuit.
41+** Generator field circuit An open or shorted condition detected in the generator field control circuit.
42 ASD relay control circuit An open or shorted condition detected in the auto shut down relay circuit.
43+** Ignition coil # 1, 2 or 3 Peak primary circuit
primary circuit current not achieved with maximum dwell time.
44 Battery Temp Voltage An open or shorted condition detected in battery temperature sensor circuit, or a problem exists in the PCM battery temp circuit.
46+** Charging voltage high Battery voltage sense input above target charging voltage during engine operation.
47+** Charging voltage low Battery voltage sense input below target charging voltage during engine operation. Also, no significant change detected in battery voltage during active test of generator output.
51** Lean O2 signal Oxygen sensor signal indicates lean fuel/air ratio condition during engine operation.
52** Rich O2 condition Oxygen sensor signal indicates rich fuel/air ratio condition
or during engine operation.
Excessive leaning Adaptive fuel value leaned excessively due to a sustained rich condition.
53 Internal controller Internal PCM fault condition detected.
55 None Completion of Diagnostic Trouble Code display on the Malfunction Indicator Lamp (MIL), (previously called the Check Engine Lamp).
62 EMR miles Unsuccessful attempt to update EMR mileage in the controller EEPROM.
63 EEPROM write denied Unsuccessful attempt to write to an EEPROM location by the controller.
N/A Fault code error An unrecognized fault ID received by scan tool.
+ Malfunction Indicator (Check Engine) Lamp On
** Malfunction Indicator (Check Engine) Lamp On (California Only)