
B37 Fuel Feed Line/Fuel temperature sensor failure.
My f20 started throwing a fuel temperature sensor short to ground code so I had a look at my DDE and it was swimming in diesel.
After £132 for a new line with the integrated sensor, a lot of electrical contact cleaner & blasting the harness and look with air, I also had to brush the DDE plug pins to get contamination from the diesel of the pins. I think I caught it pretty early so managed to save the DDE & wiring harness. Only light pooling on less than 1/4 of the harness plug.
All fixed and out of limp mode, but beware of this crap design flaw. The seal on the fuel temperature sensor fails and via capillary action starts to wake up the copper wiring back to the DDE allegedly there’s been a TSB and the part is now potted to prevent the diesel from going all the way back up the loom and drowning the DDE but it was some scary stuff.