Check Engine Light

Discussion in 'SRT Hellcat General Discussions' started by Beelzebub, Mar 10, 2015.

  1. Beelzebub

    Beelzebub Gold Member

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    So my Cat threw a code P018D so I took it in and was told it's a stored code and they cleared it, 1 week later it's back so now I have a appointment to take it back. Anyone else throw this code? It's fuel injector sensor I think
     
  2. tsc

    tsc SRT Hellcat Enthusiast

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    Only codes I've thrown is when I pulled the active exhaust fuse. P018D is 'Fuel Pressure Sensor Circuit High Voltage'. Wish I had more info.. I can't remember if the Diagnostics page in the DID only displays active codes, or if it displays stored/historical codes too. Try disconnecting your battery and see if the code is still there. If it isn't it was stored..

    Probably still worth a trip to the dealer regardless.
     
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  3. WhoFlungPoo

    WhoFlungPoo Silver Member

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    Mine had same exact problem at delivery. The car will only run moderate while sensor is bad but drivable. Once they replaced it it was like the hounds of hell were let loose and hold on for dear life. Big difference once replaced. My tech only took him 45 minutes to replace and did not have to remove anything to get to it.
     
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  4. Beelzebub

    Beelzebub Gold Member

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    Thanks WhoFlungPoo I needed to hear that
     
  5. fnkychkn

    fnkychkn swollen member Gold Supporting Member

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    P018D-FUEL PRESSURE SENSOR CIRCUIT HIGH

    Theory of Operation
    The Powertrain Control Module (PCM) provides a 5-Volt supply to the Fuel Rail Pressure Sensor (FRPS). The PCM also provides a ground on the sensor return circuit. The Fuel Rail Pressure Sensor provides a signal to the PCM on the Fuel Rail Pressure Sensor Signal circuit. This sensor signal voltage changes based on the pressure in the fuel rail. The PCM will detect a low signal voltage at low rail pressures. The PCM will detect a high signal voltage during high rail pressure conditions.


    When Monitored and Set Conditions
    When Monitored: This diagnostic runs continuously when the following conditions are met:
    • With the ignition on.
    • Battery voltage greater than 10.4 volts.


    Set Conditions:

    • The Fuel Rail Pressure Sensor (FRPS) signal circuit voltage is above a calibrated threshold for a certain period of time.


    Default Actions:
    • The MIL light will illuminate.



    Possible Causes
    FRPS SIGNAL CIRCUIT SHORTED TO VOLTAGE
    FRPS SIGNAL CIRCUIT OPEN/HIGH RESISTANCE
    FRPS SIGNAL CIRCUIT SHORTED TO THE 5-VOLT SUPPLY CIRCUIT
    SENSOR GROUND OPEN/HIGH RESISTANCE
    FUEL RAIL PRESSURE SENSOR <<< most likely cause
    POWERTRAIN CONTROL MODULE (PCM)
     
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  6. paul suloff

    paul suloff Silver Member

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    Mine has been on the battery tender since Dec. Started it up yesterday to lube things up and I have a check engine light now? I did have the fuel pump fuse out so I could spin the motor once and a while. (was later told to just floor the gas and it wouldn't start) You guys have scanners to check codes or is there a function on the car?
     
  7. Beelzebub

    Beelzebub Gold Member

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    scroll thru to diagnostic then hit ok and it will search for code and display if found
     
  8. MVT

    MVT Silver Member

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    Thanks WhoFlungPoo I need to say that!:)
     
  9. paul suloff

    paul suloff Silver Member

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    Thanks found it U0109 Lost communication to fuel pump. Logical since I pulled fuse over winter. Assume I just disconnect battery to reset?
     
  10. Beelzebub

    Beelzebub Gold Member

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    Yep that should do it
     
  11. Yearight1999

    Yearight1999 Silver Member

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    This threat was difficult to read. I mean really, a conversation between Beelzebub and WhoFlungPoo, then throw in fnkychkn.
     
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  12. Yearight1999

    Yearight1999 Silver Member

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    Great information though
     

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