[SlantedEyeXI]

Need some help with this, Car started throwing both codes, P0220-Pedal position sensor switch B circuit malfunction.. and P0120-throttle position sensor switch A.

If it helps, in the beginning the codes only popped up when I drove over a bump or NY highway potholes/speed bumps lol...I would kinda feel the throttle slip/lose power and ping..code.
So I figured there was something loose or broken in the tb assembly, so that was the first thing I replaced.

Replaced TB and gas pedal assembly from a 535 and was fine for like a day and codes still pop up.
Even getting a Camshaft position sensor over retard code now too.
Car now barely drives, serious Idle surge on start then shuts off.

How many Tb sensors are there on our cars??

[Jklad]

I think there's a procedure on here to reset throttle adaptations - have you tried that?

[SlantedEyeXI]

Originally Posted by Jklad

I think there's a procedure on here to reset throttle adaptations - have you tried that?

Yea reset almost everything. Starting with my procede command center, then unplugged batt. Did the throttle reset -key in, ign on, press gas 5sec, ign off, key out, off gas.

That actually helped me move the car some...my idle was just jumping up and down and car would shut off... but after the reset that stopped a bit but shes still dropping idle.
That's why I thought there was a 3rd tb sensor or actuator somewhere else by the oil filter housing like in other older bmws.