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Thread: Checking CEL (Check Engine Light) Codes on Honda Vehicles

  1. #1
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    Default Checking CEL (Check Engine Light) Codes on Honda Vehicles

    I've seen a lot of questions concerning engine lights and how to check them. Below are some simple directions with pictures (borrowed from bseries.net)


    This will work for any of these vehicles:

    1994-2001 (3rd Gen) Integra (RS/LS/GS/SE/GSR/Type-R)
    1992-1995 (5th Gen) Civic (VX/CX/DX/LX/EX/SI)
    1993-1997 Civic Del Sol (S, Si, VTEC)
    1996-2000 (6th Gen) Civic (VX/CX/DX/LX/EX/SI)



    1) Take a paperclip and bend it into a U-Shape.
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    Original Post NAZI Moderated


    Originally posted by r3cc0s
    Felon or Mistermeiner

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    Underneath the dash, most commonly right under the glove compartment, is a green rubber boot.
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    Original Post NAZI Moderated


    Originally posted by r3cc0s
    Felon or Mistermeiner

  3. #3
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    With the ignition off, jump this plug with the paperclip so that each end of the paperclip enters each opening of the plug. After this is done, turn your ignition key (to the point where it is one step away from starting your vehicle) and count the number of flashes.

    The long flashes are tens, and the short ones are ones.

    For example, 3 long flashes and 5 short flashes means code 35.
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    Original Post NAZI Moderated


    Originally posted by r3cc0s
    Felon or Mistermeiner

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    Finally, here is a list of codes for your vehicle to help you diagnose the problem.

    1 O2A - Oxygen sensor #1
    2 O2B - Oxygen sensor #2
    3 MAP - manifold absolute pressure sensor
    4 CKP - crank position sensor
    5 MAP - manifold absolute pressure sensor
    6 ECT - water temperature sensor
    7 TPS - throttle position sensor
    8 TDC - top dead centre sensor
    9 CYP - cylinder sensor
    10 IAT - intake air temperature sensor
    12 EGR - exhaust gas recirculation lift valve
    13 BARO - atmospheric pressure sensor
    14 IAC (EACV) - idle air control valve
    15 Ignition output signal
    16 Fuel injectors
    17 VSS - speed sensor
    19 Automatic transmission lockup control valve
    20 Electrical load detector
    21 VTEC spool solenoid valve
    22 VTEC pressure valve
    23 Knock sensor
    30 Automatic transmission A signal
    31 Automatic transmission B signal
    36 traction control found on JDM ecu's
    41 Primary oxygen sensor heater
    43 Fuel supply system
    45 Fuel system too rich or lean
    48 LAF - lean air fuel sensor
    54 CKF - crank fluctuation sensor
    58 TDC sensor #2
    61 Primary oxygen sensor
    63 Secondary oxygen sensor
    65 Secondary oxygen sensor heater
    71 random misfire cylinder 1
    72 random misfire cylinder 2
    73 random misfire cylinder 3
    74 random misfire cylinder 4
    80 Exhaust Gas Recirculation insufficient flow detected
    86 ECT Sensor (Engine Coolant Temperature) circuit range / performance problem
    90 Evaporative Emission Control System leak detected in the fuel tank area
    91 Evaporative Emission Control System insufficient purge flow
    Original Post NAZI Moderated


    Originally posted by r3cc0s
    Felon or Mistermeiner

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