Code P0221 on 2002 BMW 525i

Tiny
E30M3MON
  • MEMBER
  • BMW 525
Hi
The Check Engine light just came on and the code I obtained from the OBD2 reader is P0221, "Throttle/Pedal Position Sensor/Switch B Circuit Range/Performance Problem". The car has the M54 engine with auto trans, and a mere 20k miles.

Can you point me to the area where this malfunction might be (at the pedal or throttle body - or elsewhere. The "B" in the description is not very informative)? I'd also be interested if there is a process to eliminate this code as being a false indication, possibly masking some other root cause.
Thank you
Al
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Saturday, July 28th, 2007 AT 7:37 AM

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Tiny
DR. HAGERTY
  • MEMBER
Sounds like you scanned the car with a generic scanner. The GT-1 scanner used at the dealer will be able to pinpoint the problem. It could be a plausibility issue with either the throttle pedal assembly or the throttle body or it could be related to a bulletin for replacement of the engine wiring harness and replacement of the throttle body. Repost and let me know what you find out.
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Saturday, July 28th, 2007 AT 8:04 AM

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