2 and 3 Digit Codes
NOTE: Diagnostis trouble codes (DTC's) indicate that the Powertrain Control Module (PCM) has detected condition outside of set limits. Diagnostic trouble codes do not necessarily identify a failed component.
DTC NO. SCAN TOOL DISPLAY DESCRIPTION OF CONDITIONS
11 No crank reference No distributor reference
signal at PCM signal detected during engine cranking.
13+** No change in MAP No variation in MAP
from start to run sensor is detected
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 signal at center 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+** ECT sensor voltage low Sensor input below the minimum acceptable voltage
or
ECT sensor voltage high Sensor input above the maximum acceptable voltage.
23 Charge air temp. sensor Sensor input above the
voltage high maximum acceptable voltage
or
Charge air temp. sensor Sensor input below the
voltage low minimum acceptable voltage.
24+** TPS voltage low Sensor input below the minimum acceptable voltage
or
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 system failure An open or shorted condition detected in the EGR solenoid
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 S/C solenoid circuits An open or shorted condition detected in the speed control vacuum or vent solenoid circuits.
37 Torque converter An open or shorted
unlock solenoid condition detected in the torque converter part throttle unlock solenoid circuit (automatic transmission).
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.
or
No ASD voltage sense No ASD voltage sensed at PCM
44 Battery temp. voltage. Battery temperature sensor volts out of range.
45 Overdrive solenoid An open or shorted condition detected in overdrive solenoid 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.
51** Lean O2 signal Oxygen sensor signal indicates lean fuel/air ratio condition during engine operation.
or
Added adaptive memory Added adaptive memory at rich limit.
52** Rich O2 condition Oxygen sensor signal indicates rich fuel/air ratio condition during engine operation.
or
Added adaptive memory Added adaptive memory at lean limit.
53 PCM failure Internal PCM fault condition detected.
54 Sync pick-up signal No fuel sync signal detected during crankshaft rotation.
62 PCM failure PCM failure
SRI miles not stored SRI miles not stored
63 PCM failure PCM failure
EEPROM write denied EEPROM write denied
55 N/A Completion of trouble code display on Malfunction Indicator Lamp.
+ Malfunction Indicator Lamp On
** Malfunction Indicator Lamp On (California Only)