P0758

[Simon Wallwork]

This is a continuation of my 'red lights come on' thread.

Finally got the fault code and it is "P0758 Shifter Solenoid B: Electrical"

We have problems here in Bulgaria with Pine Martens nibbling wires. Is this possible in this case?

Could low ATF levels cause this?
Still a bit baffled by this, but car is doing it 100% of the time now!

[MikkiJayne]

Thats either a TCU hardware fault per the discussion in the other thread, or a wiring issue (nibbled or corroded). I've seen it several times now and its never been an actual solenoid problem - its always something outside the gearbox. ATF can't cause those sorts of faults.

[Simon Wallwork]

Thanks MikkiJayne. I shall investigate further.

[Simon Wallwork]

I should add that after the very competent guy drove the car, with his OBD attached he said "no pressure".

[Simon Wallwork]

I've had a look under the car, and there's no sign of damaged wiring.

Does anybody- MikkiJayne possibly??- have a TCU they could sell me?

4D0 927 156 BN is the number on the case.

[Snaggle57]

Originally Posted by Simon Wallwork

I've had a look under the car, and there's no sign of damaged wiring.

Does anybody- MikkiJayne possibly??- have a TCU they could sell me?

4D0 927 156 BN is the number on the case.

I have one that came from a8parts when I thought mine was faulty but it wasn’t.
However it’s from a PF car and I think the code ends in BG but not certain.
If this would work on your car let me know and I’ll dig it out and check