2 and 3 Digit Codes

NOTE: Diagnostic trouble codes indicate that the Powertrain Control Module (PCM) has detected condition outside of set limits. Diagnostic trouble codes do not necessarily identify failed component.

DTC NO. SCAN TOOL DISPLAY DESCRIPTION OF CONDITIONS

11 [1] No reference signal No camshaft reference
during cranking signal detected during engine cranking.

12 [1] Battery disconnect Battery input to PCM disconnected during last 50 key starts.

13 [2] 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 [2] MAP voltage too low MAP sensor input below minimum acceptable voltage.
or
MAP voltage too high MAP sensor input above maximum acceptable voltage.

15 [2] No vehicle speed signal No vehicle distance (speed) sensor signal detected during road load conditions.

17 [1] Engine is cold too long Engine coolant temperature remains below normal operating temperatures during vehicle travel (thermostat).

21 [2] O2 sensor voltage at center Neither rich nor lean condition is detected from the oxygen sensor input.
or
02 sensor voltage high Oxygen sensor input voltage maintained above normal operating range.

22 [2] ECT sensor voltage low Sensor input below the minimum acceptable voltage
or
ECT sensor voltage high Sensor input above the maximum acceptable voltage.

23 [2] Intake air temp. sensor Sensor input above
voltage high maximum acceptable voltage
or
Intake air temp. sensor Sensor input below
voltage low minimum acceptable voltage.

24 [2] TPS voltage low Sensor input below the minimum acceptable voltage
or
TPS voltage high Sensor input above the maximum acceptable voltage.

25 [2] IAC motor circuits An open or shorted condition detected in one or more of the IAC control circuits.

27 [2] Injector #1 control circuit Injector output driver does not respond properly to the control signal.
or
Injector #2 control circuit Injector output driver does not respond properly to the control signal.
or
Injector #3 control circuit Injector output driver does not respond properly to the control signal.
or
Injector #4 control circuit Injector output driver does not respond properly to the control signal.

33 [1] A/C clutch relay circuit An open or shorted condition detected in the A/C clutch relay circuit.

34 [1] Speed Control solenoid circuits An open or shorted condition detected in the speed control vacuum or vent solenoid circuits.

41 [2] Generator field circuit An open or shorted condition detected in the generator field control circuit.

42 [1] 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 [1] Battery temp. voltage. Battery temperature sensor volts out of range.

46 [2] Charging voltage high Battery voltage sense input above target charging voltage during engine operation.

47 [2] Charging voltage low Battery voltage sense input below target charging voltage during engine operation.

51 [2] Lean O2 signal Oxygen sensor signal indicates lean fuel/air ratio condition during engine operation.
or
Adaptive memory rich Added adaptive memory at rich limit.

52 [2] Rich O2 condition Oxygen sensor signal indicates rich fuel/air ratio condition during engine operation.
or
Adaptive memory lean Added adaptive memory at lean limit.

53 [1] PCM failure Internal PCM fault condition detected.


54 [1] No cam signal No fuel sync (cam position) signal detected during crankshaft rotation.


55 [1] Display not shown on scan tool Completion of fault code display on Malfunction Indicator Lamp (Check Engine Lamp).


62 [1] PCM failure PCM failure
SRI miles not stored SRI miles not stored

63 [1] PCM failure PCM failure
EEPROM write denied EEPROM write denied

Remarks:
[1] Malfunction Indicator Lamp will not illuminate at all times
[2] Malfunction Indicator Lamp on during engine operation