P03C8 BMW Fault Code
Check P03C8 OBD Fault Code ReasonBMW HO2S Sensor Circuit Malfunction (HO2S-11) During testing the HO2S Heaters are checked for opens/shorts and excessive current draw.
The BMW test fails when current draw exceeds a calibrated limit and/or an open or short is detected. Short to VPWR in harness or HO2S. Water in harness connector. Open VPWR circuit. Open GND circuit. Low battery voltage. Corrosion or poor mating terminals and wiring Damaged HO2S heater. Damaged PCM.
P03C8 Code Symptoms :
The scent may P03C8 signal oil or coolant leaking from their normally closed-loop systems, or it may indicate dangerous exhaust gases invading your car's interior. Car and truck exhaust contains toxic gases such P03C8, so if the inside of your car as if you were standing behind your car, get out and get it fixed.
Fight the urge to take a little nap first. So sleepy. That's the carbon monoxide talking, friends. At least open a window on your way to the shop.
Diagnosis And Repairing P03C8
Parts or components should not be replaced with reference to only a P03C8 DTC. The vehicle service manual should be consulted for more information on possible causes of the fault, along with required testing.
How to fix P03C8 code ?
- Damaged camshaft position (CMP) sensor
- Faulty oil control valve (OCV)
- Fuel Injectors circuit poor electrical connection
- Improper ignition timing
