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Thread: 93 2.5 engine codes desifering

  1. #1
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    Question 93 2.5 engine codes desifering

    Hey all new to the site, just picked up my first jeep, it has a 2.5 liter
    in it, it is a 1993 yj
    any one know the best place to understand the code flashes
    i can retrive them I just need to know the "code"

  2. #2
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    Code 11 The engine has not cranked since the battery was disconnected.
    Code 12 The battery has been disconnected and the computer (ECU) has been reset.
    Code 13 MAP sensor signal to the computer (ECU) not changing
    Code 14 MAP sensor signal out of range
    Code 15 No signal received by the computer (ECU) from the speed sensor
    Code 16 Battery voltage drop below ‘normal’ when engine running
    Code 17 Coolant sensor not reporting more than 160° after 8 minutes of engine running

    --------------------------------------------------------------------------------

    Code 21 Oxygen sensor reporting too lean or too rich after 2 – 12 minutes with temp over 170° and RPM above 1500
    Code 22 Coolant temperature sensor out of range
    Code 23 Air charge temperature sensor out of range
    Code 24 Throttle Position Sensor (TPS) signal out of range
    Code 25 Air Idle Speed motor shorted or voltage out of range
    Code 26 1985 + Turbo models: engine injector driver circuit one shorted or open
    TBI models: injector peak current not achieved
    Code 27 Turbo engine injector driver circuit two shorted or open

    --------------------------------------------------------------------------------

    Code 31 Purge Solenoid open or shorted
    Code 32 Power Limited light lamp failure
    Code 33 A/C relay open or shorted
    Code 34 84 – 87 models with EGR, EGR solenoid open or shorted
    1987 and later models: cruise control servo failure
    Code 35 Radiator fan relay open or shorted
    Code 36 Wastegate or other solenoid open or shorted
    Code 37 Baro-read solenoid open or shorted

    --------------------------------------------------------------------------------

    Code 41 Alternator field control circuit open or shorted
    Code 42 1984 model injector circuit 1 open or shorted
    1986+ models: ASD relay open or shorted
    Code 43 Ignition coil driver circuit open or shorted
    Code 44 1984 logic module diagnostic failure
    1985-86 battery temp out of range
    1987+ Signal to J2 not present at SEMC
    Code 45 Turbo engines boost above predefined range
    Code 46 Battery charging voltage out of range
    Code 47 Battery charging voltage out of range

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    Code 51
    Code 52 1984 engine running too rich or lean
    1985+: code 51=running too lean, code 52=running too rich
    Code 53 Logic module fault
    Code 54 Signal loss from the fuel injector sync pickup during engine rotation. (HEP)
    Code 55 End of fault code list
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  3. #3
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    thanks, it needs o2 sensor
    tom

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