Code P00A3 please help!

Discussion in 'SRT Hellcat General Discussions' started by Irocz89, May 30, 2016.

  1. Irocz89

    Irocz89 Rookie

    May 1, 2016
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    Milwaukee, WI
    Challenger SRT Hellcat
    Did a pulley swap and 160 stat just over a week ago. Cars been running great. Put about 600 miles on it. Yesterday got on it getting on the freeway and the p00a3 code popped up. I pulled the battery cable and it was gone. Took it for a drive, got back on it and the light came back on with the same code. Any help would be appreciated!
  2. TallCool1

    TallCool1 Gold Member Hellcat Car Club Nat'l Hellcat Tech Advisor HCC Charter Member

    Jan 5, 2015
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    Pacific NW
    Challenger SRT Hellcat
    If it will permenantly clear it takes 3 times. Meaning drive, shut off completely, do that 3 times.


    Theory of Operation

    When the Powertrain Control Module (PCM) receives a ‘Start’ or ‘Run’ signal,
    it energizes the Fuel Pump relay which sends a continuous 12 volt supply to the
    Fuel Pump Control Module (FPCM). The PCM also sends a Pulse Width Modulated
    (PWM) control signal directly to the FPCM which regulates the PWM voltage that
    will be sent to the Fuel Pump Module. The PWM will vary from 10-100% depending
    on the input of the Fuel Rail Pressure Sensor and other engine demands. The PCM
    receives a PWM signal from the FPCM representing the state of all inputs and
    outputs of the FPCM. This is a Constant Pressure Fuel system which means any
    pressure test performed on the Fuel Pump would show a continuous pressure
    (regardless of the changes in PWM). If a pressure sensor fails or other failures
    are present; The duty cycle goes to a default setting (80%) to maintain fuel

    When Monitored and Set Conditions

    When Monitored: This diagnostic runs continuously when the following
    conditions are met:

    • Engine running
    • Battery voltage
      greater than 11.0 volts

    Set Conditions:

    • The Powertrain Control
      Module (PCM) detects a difference between theVariable Speed Fuel Pump pressure
      Actual and Desired.

    Default Actions:

    • Fault is set on the
      first trip that the diagnostic fails.
    • When this DTC is set,
      the Fuel Pump Control Module (FPCM) will continue to run the Fuel Pump Module at
      100% duty cycle.
    • The MIL will be turned
      off on the third consecutive trip that the diagnostic passes.

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