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-   -   08 550i p0120 please help! (https://5series.net/forums/e60-discussion-2/08-550i-p0120-please-help-148497/)

ff54976 05-14-2018 06:33 PM

08 550i p0120 please help!
 
I keep having an ongoing issue with this code. I put in a brand new battery, that didn't help. I put a new oem throttle body, that helped a little. I spliced a new connector on the throttle body harness that worked for 2 weeks or so now the code comes back and my car goes into limp mode.
Is there something I'm missing? Please help!

FormerE30Owner 05-14-2018 07:02 PM


Originally Posted by ff54976 (Post 1595201)
I keep having an ongoing issue with this code. I put in a brand new battery, that didn't help. I put a new oem throttle body, that helped a little. I spliced a new connector on the throttle body harness that worked for 2 weeks or so now the code comes back and my car goes into limp mode.
Is there something I'm missing? Please help!

I think that that code is generic for throttle pedal position sensor. Perhaps the sensor on the pedal is bad.

ff54976 05-15-2018 05:10 AM

is there a specific bmw code that points to the throttle pedal?

FormerE30Owner 05-15-2018 11:39 AM


Originally Posted by ff54976 (Post 1595206)
is there a specific bmw code that points to the throttle pedal?

Probably, but have you had the throttle position sensor checked?

ff54976 05-16-2018 10:53 AM

isn’t the throttle position sensor on the side of the throttle body? That was the first thing I replaced

FormerE30Owner 05-17-2018 04:46 AM


Originally Posted by ff54976 (Post 1595236)
isn’t the throttle position sensor on the side of the throttle body? That was the first thing I replaced

Yes, but I mean the actual pedal in the driver compartment. Perhaps the pedal itself is defective.

ff54976 05-17-2018 07:46 AM

I replaced the pedal assembly two days ago and it didn’t help at all

FormerE30Owner 05-17-2018 11:27 AM

Looks like you need to get someone to read the codes with a BMW specific code reader. Somehow, now, I think that you might have an issue with the harness which you say you spliced and it worked for 2 days.


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