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Reduced Engine Performance Mystery

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Old Jan 17, 2022 | 10:49 PM
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From: San Diego
Default Reduced Engine Performance Mystery

Hello helpful Souls,

I'm a garage hack with my first ever Volvo.... a 2007 C70. The car now exhibits a mysterious REP condition that randomly goes in and out. The codes (below) point to the Accelerator Pedal but I put in a new one. The condition still randomly appears. I can shut off the car and fully depress and slowly release the accelerator, then start the car, and the REP is gone. My drive 5 minutes or 50 miles before it reappears.

I found these codes along with some data stream readouts.....
  • ECM - 941D Accelerator pedal (AP) position sensor, analog signal. Signal too low.
  • ECM - 9430 Accelerator pedal (AP) position sensor, analog signal. Faulty signal.
  • CEM - 3F93 Accelerator pedal (AP) position sensor. Signal too low.
  • ABS - 0101 Communication between control modules. Communication problems with the engine control module (ECM)
  • DATASTREAM
    • Throttle position sensor, potentiometer 1 ..... 0.65 V
    • Throttle position sensor, potentiometer 2 ..... 4.35 V
    • Air mass, correction factor.... 1.05
    • Mass air flow..... 12.10 kg/h
    • Adaption throttle unit.... OK
    • Accelerator pedal sensor (via CEM) ..... 0%
    • Accelerator pedal sensor, PWM .... 7.81%
Am grateful for any help or guidance offered.

 
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