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Check engine light help...

Discussion in 'ECU's, Electronics, and Tuning' started by ChrisSiR, Mar 12, 2004.

  1. ChrisSiR

    ChrisSiR Senior Member

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    So, i had another CEL pop on last week sometime(willing to bet its the insane wireing job on the swap).... i checked the code on the ECU and it flashes 1 long, 1 med, and 3 short (23? 13?)

    Code 13 being Atmospheric pressure sensor...
    Code 23 being Knock sensor

    ive reset the ecu twice, and it still comes right back on.... the light doesnt come on until the car is warmed up...

    also on a side note, ive looked at about 4 diff CEL trouble code lists and non show a code 23.... but all have the 13

    Someone wanna point me in the right direction?

    its a b16a sir swapped into an 88 crx w/ the pr3 ecu
     
  2. radnulb

    radnulb Senior Member

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    23 = knock sensor. check wiring to knock sensor
    13 = PA sensor. Much more odd. check wiring, again.
     
  3. ChrisSiR

    ChrisSiR Senior Member

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    never mind, the sensor was just unplugged :roll:
     
  4. cycloneb18c3

    cycloneb18c3 Senior Member

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    did both lights go away? the atmospheric pressure sensor(barometer) is actually built into the ecu-on obd-0's(dont know about obd 1-2.)
     
  5. ChrisSiR

    ChrisSiR Senior Member

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    yea, all is well... the PA sensor is actually on the pass side kick panel in the crx's.... it wasnt a PA code after all, just a knock sensor (in which the connector was just unplugged)
     
  6. radnulb

    radnulb Senior Member

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    88-91 CRX have external PA sensor
    88-90 Integras have external PA sensor
    89-91 DA8 / EF8 B16A1 PW0/PR3 have external PA sensor

    91 OBD0 Integra PR4 have internal PA sensor
    92-95 USDM OBD1 Civic/integra ECU have internal PA sensor
    90-93 USD Accord have internal PA sensor

    JDM ECUs lack PA sensor.
    ...
     
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