Fault Code P00FB

Discussion in 'Dodge Challenger SRT Hellcat' started by phil hunter, Jan 1, 2016.

  1. phil hunter

    phil hunter Hellcat Member

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    Just bought a new Plum Crazy Challenger Hellcat automatic. On the way home the Malfunction Indicator (MIL) Light came on along with the Electronic Throttle Control (ETC) light. Can not get them to turn off. Checking the diagnostics, it shows code: P00FB. Any idea what this code is?

    Thanks,

    Phil
     
  2. FarAwayFromHere

    FarAwayFromHere Gold Member

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    WARRANTY
    Oh Boy...Ouch....
    Bummer Dude...
    Dealer repair!
     
  3. TrackDay

    TrackDay Silver Member

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    Looks like the TMAP sensor on the driver's side of the supercharger on the lid is reading high.
     
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  4. fnkychkn

    fnkychkn swollen member Gold Supporting Member

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    P00FB-SUPERCHARGER/TURBOCHARGER OUTLET AIR PRESSURE SENSOR 1 CIRCUIT HIGH

    Theory of Operation

    [​IMG]


    COMPONENT LOCATION / CORRELATING PRESSURE SENSOR DTCS / CORRELATING TEMP SENSOR DTCS
    BARO SENSOR Inside the PCM P0109, P2227, P2228, P2229, P3032 N/A
    Mass Air Flow (MAF) Sensor Before the Throttle Body P0102, P0103, P1613 P0111, P0112, P0113
    Throttle Outlet Pressure (TOP) Sensor Between the Throttle Body and Supercharger P0069, P012A, P012B, P012 C, P012D, P1613 P0096, P0097, P0098
    Intermediate MAP (IMAP) Sensor On the Intake Manifold directly after the Supercharger P00F8, P00F9, P00FA, P00FB, P0607 P00E9, P00EA, P00EB
    Bank 1 MAP Sensor Right side of the Intake Manifold P0105, P0106, P0107, P0108, P0607 P07B, P007C, P007D
    Bank 2 MAP Sensor Left side of the Intake Manifold P2A0A, P2A0B, P2A0C, P2A0D, P0607 P00A1, P00A2, P00A3


    NOTE: The MAF Sensor and each of the four MAP Sensors also have an integral air temperature sensor. The temperature sensors have a 5.0 volt signal circuit and share the sensor ground circuit with the pressure sensor. They do not share the 5-Volt Reference circuit with the pressure sensor and therefore operate as a typical two wire temperature sensor.


    The 6.2L engine uses several sensors to monitor the air pressure and temperature throughout the intake air system. The PCM uses this information to help calculate fuel delivery, ignition timing and Supercharger control. The PCM runs diagnostics to check the rationality of the sensors. The Supercharger Inlet Pressure Sensor is the centralized sensor in the system and is the main sensor used for the rationality diagnostics of the airflow before and after the Throttle Body.



    Individual MAP/Pressure Sensor rationality diagnostic checks:

    • At ignition on, engine not running, the BARO Sensor and four MAP/Pressure Sensor input signals are compared. If one of the MAP/Pressure Sensor input signals has a difference of more than a calibrated threshold from the others, a performance fault is set against that sensor.
    • With the engine running, the input signals of the three MAP/Pressure Sensors that are downstream of the Supercharger Inlet Pressure Sensor (Supercharger Outlet Pressure Sensor, Bank 1 MAP, Bank 2 MAP) are compared. If one of the sensor input signals has more than a 10.0 kPa (1.5 psi) difference from the other two, a performance fault is set against that sensor.


    BARO/Supercharger Inlet Pressure Sensor rationality diagnostic check:




      • The Supercharger Inlet Pressure Sensor signal is compared to the BARO signal to check rationality of the sensors. During natural aspiration, the Supercharger Inlet Pressure Sensor signal cannot be greater than the BARO signal plus 10.3 kPa (1.49 psi). During boost conditions, the Supercharger Inlet Pressure Sensor signal and BARO signal pressures should be similar. If the diagnostic fails during a drive cycle, a fault is set (P0069) and the secondary Supercharger Inlet Pressure Sensor rationality diagnostic is run to determine which sensor is irrational.
    MAF/Supercharger Inlet Pressure Sensor rationality diagnostic check:


    • This diagnostic runs continuously, unless any airflow, throttle, MAF, BARO, or Supercharger Inlet Pressure Sensor diagnostics have failed. Then using the pressure differential across the throttle opening (BARO - Supercharger Inlet Pressure Sensor), the PCM models the mass air flow volume through the Throttle Body. This modeled value is compared to the actual MAF Sensor signal input to the PCM. If the difference is greater than a calibrated threshold, a fault is set (P1613) and the secondary Supercharger Inlet Pressure Sensor rationality diagnostic is run to determine which sensor is irrational.
    Supercharger Inlet Pressure Sensor rationality diagnostic check:




      • If either of the first two diagnostics fail during a given trip, or if one of the downstream MAP/Pressure Sensors is determined to be irrational, the PCM runs a secondary diagnostic to determine if the Supercharger Inlet Pressure Sensor is rational. With the engine in a natural aspiration condition (not boosted), the PCM compares the signal input from the Supercharger Inlet Pressure Sensor to the signal inputs from the Supercharger Outlet Pressure Sensor, Bank 1 MAP, and Bank 2 MAP Sensors. If the Supercharger Inlet Pressure Sensor is not within a calibrated threshold of the other three MAP/Pressure Sensors, it is determined to be irrational and a fault is set (P121B).

    Temperature sensor rationality checks:


    • After a cold soak of the engine, the Engine Coolant Temperature (ECT) and Ambient Air Temperature (AAT) Sensor inputs are compared to the inputs form each of the temperature sensors located in the MAF and MAP Sensors. If a temperature sensor is not within a calibrated threshold of the ECT or AAT Sensors, a performance fault is set.



    [paste:font size="4"]When Monitored and Set Conditions
    When Monitored: This diagnostic runs continuously when the following conditions are met:

    [/paste:font]



      • With the ignition on.
      • Battery voltage greater than 10.4 volts.

    Set Conditions:


    • The Supercharger Outlet Pressure Sensor input voltage is above the maximum acceptable threshold.


    Default Actions:



      • The MIL light will illuminate.


    Possible Causes

    5–VOLT SUPPLY CIRCUIT SHORTED TO VOLTAGE
    SUPERCHARGER OUTLET PRESSURE SIGNAL CIRCUIT SHORTED TO VOLTAGE
    SUPERCHARGER OUTLET PRESSURE SIGNAL CIRCUIT SHORTED TO THE 5–VOLT SUPPLY CIRCUIT
    SUPERCHARGER OUTLET PRESSURE SIGNAL CIRCUIT OPEN OR HIGH RESISTANCE
    SENSOR GROUND CIRCUIT OPEN OR HIGH RESISTANCE
    SUPERCHARGER OUTLET PRESSURE SENSOR
    POWERTRAIN CONTROL MODULE (PCM)
     
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  5. 1FSTCAT

    1FSTCAT The Punisher

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    Just looked at all of your posts, why are you in this forum if you don't have a Hellcat? You clearly have a lot of time to track all of the issues and comment on them here.

    Guy gets a new car posts for helps and you respond as you do...I don't get it. If you have issue with the car, take it out on FCA. Not sure what it takes to ban someone here, but I hope you're on the short list. Seriously, contribute and encourage, but the shot to the nads in every post is just sad.
     
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  6. RichCat

    RichCat Hellcat Member Hellcat Car Club HCC Charter Member

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    Hi,
    Not sure what is really going on but something I would try is to unplug and reconnect the sensor on the
    top driver side of supercharger housing…carefully to see if it is possibly a bad connection. And wiggle
    some of the wiring around the MAP sensor area on the driver side of the intake tube.

    RicH
     
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  7. Steven_sbs

    Steven_sbs Browncoats Unite Gold Supporting Member

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    Where would we be without you? Nice post.
     
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  8. phil hunter

    phil hunter Hellcat Member

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    For those who offered help, than you.


    Phil
     
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  9. usmc341

    usmc341 Gold Member

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  10. Viperjock

    Viperjock Rookie

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    I have the same problem. I have already been to the dealer once. Just got the light again today.
     
  11. Viperjock

    Viperjock Rookie

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  12. Viperjock

    Viperjock Rookie

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    Phil,
    What did you do to get this fixed? I went to the dealer last week. They supposedly fixed it. I just started my car up and got the ETC light.
     
  13. Danny123

    Danny123 SRT Hellcat Moderator Staff Member

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    image.jpeg I just got this one, wondering if it is caused by the race fuel I put in on Friday night at the track? Going to dealer Monday to have it fixed.
     
  14. sgoyal

    sgoyal Gold Member

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    I drove my car and so far no error. But I thought that P0420 was due to O2-sensor being dipped in the water
     
  15. clickr

    clickr Silver Member

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    did it rain on your car or did you wash it? Seems like some have reported problems around the connectors around the SC. Unplug them that you can find one at a time, see if there is any water. Put electrical tape on each plug after putting it together. hope you get it straightened out.
     

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