U3301 BMW Fault Code
Check U3301 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.
U3301 Code Symptoms :
The scent may U3301 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 U3301, 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 U3301
Parts or components should not be replaced with reference to only a U3301 DTC. The vehicle service manual should be consulted for more information on possible causes of the fault, along with required testing.
How to fix U3301 code ?
- Damaged camshaft position (CMP) sensor
- Erratic camshaft position due to low oil pressure
- Camshaft advance mechanism binding (VCT unit)
- Variable Camshaft Timing (VCT) position circuit poor electrical connection
