kujiwara
Member
Need help identifying an issue with the car, took the car to an MOT center and failed emissions, they tried replacing the O2 sensor and then car would not start (I think they wired it wrong). They tried putting in the old sensor and still wouldn't start. Car does crank. Does the FSI wiring system have any fuses protecting the ECU from being damaged by this? The car's been sitting there for two days already and they haven't made progress? Any idea what could be causing this? I believe the O2 sensor is the only thing they touched. I've found spare ECU and immo delete service already, but the shop seems hesitant to jump to that cuz they have to cover the costs.