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Thread: Wheel speed sensor errors?

  1. #1
    Advanced Tuner Fox95's Avatar
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    Wheel speed sensor errors?

    Im getting front wheel speed sensor errors on this vehicle for some reason.

    when I drive it with a scanner that will monitor all 4 wheel speed sensors, they all show the same speeds and don't ever seem to drop out.

    but I am getting codes:

    [PCM] P0101 - Mass Air Flow (MAF) Sensor Performance (Old) (History) (Immature)
    [PCM] P0300 - Engine Misfire Detected (Old) (Immature)
    [Brake] C1221 - LF Wheel Speed Sensor Input Signal is 0 (History)
    [Brake] C1222 - RF Wheel Speed Sensor Input Signal is 0 (History)
    [Brake] C1248 - EBCM Turned the Red Brake Warning Indicator On (History)
    [Brake] C1278 - TCS Temporarily Inhibited By PCM (History)
    [Brake] C1293 - Code C1291 Set in Previous Ignition Cycle (History)
    [Restraints] U1096 - Loss of Communications with IPC (History) (Immature)
    [Restraints] U1000 - Class 2 Communication Malfunction (History) (Immature)
    [Restraints] U1016 - Loss of Class 2 Communication with VCM (History) (Immature)
    [HVAC] B0363 - (History) (Immature)
    [HVAC] B0441 - (History) (Current) (Immature)
    [Convenience] B2282 - (History) (Immature)
    [Convenience] B2284 - (History) (Immature)
    [Convenience] B2286 - (History) (Immature)
    [Convenience] U1016 - Loss of Class 2 Communication with VCM (History) (Immature)
    [Convenience] U1096 - Loss of Communications with IPC (History) (Immature)
    [Convenience] B2287 - (History) (Immature)
    [Convenience] B2283 - (History) (Immature)
    [Convenience] U1016 - Loss of Class 2 Communication with VCM (History) (Immature)
    [Convenience] B2285 - (History) (Immature)
    [Convenience] U1096 - Loss of Communications with IPC (History) (Immature)
    [Convenience] U1096 - Loss of Communications with IPC (History) (Immature)

    Any ideas on this?

    thanks
    Last edited by Fox95; 10-27-2008 at 05:19 PM.
    Roadracing Crew Chief - World Superbike, British Superbike, Moto America.

  2. #2
    Tuner Street Legal's Avatar
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    Quote Originally Posted by Fox95 View Post
    Im getting front wheel speed sensor errors on this vehicle for some reason.

    when I drive it with a scanner that will monitor all 4 wheel speed sensors, they all show the same speeds and don't ever seem to drop out.

    but I am getting codes:

    [PCM] P0101 - Mass Air Flow (MAF) Sensor Performance (Old) (History) (Immature)
    [PCM] P0300 - Engine Misfire Detected (Old) (Immature)
    [Brake] C1221 - LF Wheel Speed Sensor Input Signal is 0 (History)
    [Brake] C1222 - RF Wheel Speed Sensor Input Signal is 0 (History)
    [Brake] C1248 - EBCM Turned the Red Brake Warning Indicator On (History)
    [Brake] C1278 - TCS Temporarily Inhibited By PCM (History)
    [Brake] C1293 - Code C1291 Set in Previous Ignition Cycle (History)
    [Restraints] U1096 - Loss of Communications with IPC (History) (Immature)
    [Restraints] U1000 - Class 2 Communication Malfunction (History) (Immature)
    [Restraints] U1016 - Loss of Class 2 Communication with VCM (History) (Immature)
    [HVAC] B0363 - (History) (Immature)
    [HVAC] B0441 - (History) (Current) (Immature)
    [Convenience] B2282 - (History) (Immature)
    [Convenience] B2284 - (History) (Immature)
    [Convenience] B2286 - (History) (Immature)
    [Convenience] U1016 - Loss of Class 2 Communication with VCM (History) (Immature)
    [Convenience] U1096 - Loss of Communications with IPC (History) (Immature)
    [Convenience] B2287 - (History) (Immature)
    [Convenience] B2283 - (History) (Immature)
    [Convenience] U1016 - Loss of Class 2 Communication with VCM (History) (Immature)
    [Convenience] B2285 - (History) (Immature)
    [Convenience] U1096 - Loss of Communications with IPC (History) (Immature)
    [Convenience] U1096 - Loss of Communications with IPC (History) (Immature)

    Any ideas on this?

    thanks

    is the ABS light on ?

    if no, just ignore the codes from the other modules..only take the PCM codes

  3. #3
    Advanced Tuner Fox95's Avatar
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    no abs light...

    am i chasing something that isn't a problem?
    Roadracing Crew Chief - World Superbike, British Superbike, Moto America.

  4. #4
    Tuner Street Legal's Avatar
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    Quote Originally Posted by Fox95 View Post
    no abs light...

    am i chasing something that isn't a problem?
    yes ignore the codes from the other modules.

    PCM codes are what you want to chase lol

  5. #5
    Advanced Tuner Fox95's Avatar
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    thanks....The ses light was tripping, but I see now it was only from p101 code and not the wheel speed stuff. I corrected the p101 table so it doesn't set that light so, no ses now....customers happy....im happy...everybody's happy....


    While were on this topic. Is there a way to set up a histogram for the P101 table? I see you can for p106 map sensor tables, but not the p101 airflow delta table.

    In the p101 airflowdelta table, it's left column"airflow delta" and top row"G/sec", what are the values in the table? Map values? or g/cyl? where does that number come from and is there a good way or deriving those numbers instead of just multiplying them by 30% -50% as i see most people doing so 101 doesn't set...
    Roadracing Crew Chief - World Superbike, British Superbike, Moto America.

  6. #6
    Супер Модератор EC_Tune's Avatar
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    You will need to make a custom PID that subtracts MAF airflow from Dynamic airflow and then make a histogram to fit.
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