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First time post!

Was hoping some of you guys with lots of experience in diagnosing Engine light problems could have a look at this and give me some idea where to start.

01 525i driving perfectly--no stuttering, starts every time--good performance when accelerating--cant feel anything wrong really but engine light on. 60,000 miles on clock.

Codes are as follows:

P0123: Throttle/Pedal Position Sensor/Switch A Circuit High Input

P0228: Throttle/Pedal Position Sensor/Switch C
Circuit High Input

P0227: Throttle/Pedal Position Sensor/Switch C Circuit Low Input

P0202: injector circuit malfunction: Cylinder 2

P0203: injector circuit malfunction: Cylinder 3

P0238: Turbocharger Boost Sensor A circuit high

P0239: Turbocharger Boost Sensor B circuit malfunction

P0240: Turbocharger Boost Sensor B circuit range/performance

If this was all wrong surely it would feel like a tractor to drive?

Any ideas where to start -- GREATLY appreciated.

Thanks Guys

 

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Thanks for the reply Rashid

Got codes from a local mechanic who has the scanner but doesnt service BMW so cant fix it.

 

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no mods at all. Completely factory spec.

Havent tried disconnecting the battery. But I took it out today and it wasn't running 100%. Shuddering and rattling more than usual but still driveable. Took it out again and it was fine.

 

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Rashid--You were 100% right--Generic scanner producing irrelevant codes.

Ended up taking this to the local dealership.
They opened the bonnet and without scanning listened to it and said your breather cap or pipe is faulty.

They took it in and replaced the pipe and cap.--Reset the computer-no codes --driving like new.

Obviously they knew what to look for and this is perhaps something they have seen before....just posting for fututre reference for others.