Hi folks

 

so, I have a 2011 2.0 tdi superb estate, 140bhp.

 

it went into limp mode with the flashing coil light a couple of weeks ago.  Plugged in the code reader and P0238 code comes up.  Took it to my local garage and they couldn’t figure it out so suggested it went to main dealer for them to read the codes.

 

main dealer thought it was g31 charge sensor so they replaced it and thought they’d cured it.  Half way home, it goes into limp mode again so they clearly haven’t.  Not best pleased at this point.

 

from what I’ve read, it could well be the wiring from the sensor to the ecu.  Has anyone any experience of this?  I’ve seen that Skoda possibly do a repair wiring harness for this sensor to the ecu?

 

if I was to make my own harness from the sensor to the ecu, does anyone know the pins / plug on the ecu I need to tap into?

 

any help or advice much appreciated. 

Or the more likely possibility is that the MAP sensor has failed, it's not unknown for it to happen. One way to check is to swap in a known good sensor and see if the problem persists.

It’s got a new MAP sensor fitted.  That hasn’t fixed it.

Engine code would assist me in finding wiring info. Letters at beginning of engine number on V5c document.

CFF

 

many thanks 

Just out dogwalking, info soon.

OK,  pin 1 at G31/G42 4-way conn plug, brown wire, goes to engine ECU pin 66, via 4 way black connector pair on gearbox bracket, brown/grey after this point.

Pin 2, yellow wire becomes red/grey at the 4-way gearbox connectors, finishing at ECU pin 30

Pin 3, grey/black wire continues as grey/black after mid-connection, going to ECU pin 17

Pin 4, purple wire continues as purple all the way to ECU pin 83

 

Check visually for wire damage near the cable entries of each of the 4-way connectors at combined sensor  and gearbox, then if all clear, continuity test end to end, and test for shorts between each wire of the four, and all to chassis (brown on pin 1 probably should have continuity to chassis)

Edited 15 April, 20233 yr by Breezy_Pete
sp

Thanks man!  I’ll get stuck into it tomorrow if it’s dry 

I had the same problem, turns out one of the wires was broken