went to get my custom exhaust made today, car got 5 miles down the road and the management light flicked on, and then went off again almost instantaneously. continued to drive the round trip of about 100 miles, and the car ran fine!
when i got home i read the fault codes, got 13-Oxygen sensor- No change in voltage/open circuit. and also 94-Hall Effect Switch (HES) High voltage. does this mean my lambda + hes switch is fcuked? i mean the ecu light didnt stay on, and the car ran fine/boosted fine etc!??