What do the fault codes of a Jeep Cherokee 1994 mean?

Answer 1

11 No ignition reference signal detected during cranking OR timing belt skipped one or more teeth; OR loss of either camshaft or crankshaft position sensor.

12 Battery or computer recently disconnected

13 MAP sensor or vacuum line may not be working

14 MAP sensor voltage below .16V or over 4.96V

15 No speed/distance sensor signal

16 Loss of battery voltage detected with engine running

17 Engine stays cool too long (bad thermostat or coolant sensor?)

21 Oxygen sensor signal doesn't change (stays at 4.3-4.5V). Probably bad oxygen sensor

22 Coolant sensor signal out of range - May have been disconnected to set timing

23 Incoming air temperature sensor may be bad

24 Throttle position sensor over 4.96V

25 Automatic Idle Speed (AIS) motor driver circuit shorted or target idle not reached

26 Peak injector circuit voltage has not been reached (need to check computer signals, voltage reg, injectors)

27 Injector circuit isn't switching when it's told to (TBI)

31 Bad evaporator purge solenoid circuit or driver

32 (1984 only) power loss/limited lamp or circuit

32 EGR gases not working (1988) - check vacuum, valve

32 (1990-92) computer didn't see change in air/'fuel ratio when EGR activated - check valve, vacuum lines, and EGR electrical

33 Air conditioning clutch relay circuit open or shorted (may be in the wide-open-throttle cutoff circuit or normal on early 80's models if you don't have air conditioning)

34 (1984-86) EGR solenoid circuit shorted or open

34 (1987-1991) speed control shorted or open

35 Cooling fan relay circuit open or shorted

35 idle switch motor fault - check connections

37 Shift indicator light failure, 5-speed

part throttle lock/unlock solenoid driver circuit (87-89)

Trans temperature sensor voltage low (1995 and on)

41 Alternator field control circuit open or shorted

42 Automatic shutdown relay circuit open or shorted

42 Fuel pump relay control circuit

42 Fuel level unit - no change over miles

43 Peak primary coil current not achieved with max dwell time

43 Cylinder misfire

43 Problem in power module to logic module interface

44 No FJ2 voltage present at logic board

44 Logic module self-diagnostics indicate problem

44 Battery temperature out of range

45 Turbo boost limit exceeded (engine was shut down by logic module)

46 Battery voltage too high during charging or charging system voltage too low

47 Battery voltage too low and alternator output too low

51 Oxygen sensor stuck at lean position

52 Oxygen sensor stuck at rich position

53 Logic module internal problem

54 No sync pickup signal during engine rotation (turbo only)

55 End of codes

61 "Baro" sensor open or shorted

62 EMR mileage cannot be stored in EEPROM

62 PCM failure SRI mile not stored

63 Controller cannot write to EEPROM

64 Catalytic Converter efficiency failure

65 Power Steering switch failure

66 No CCD Message From TCM and/or No CCD Message From BCM