P1139 VOLKSWAGEN Possible Causes
- Faulty O2 sensor
- High fuel pressure
- Faulty mass air flow (MAF) sensor
- O2 sensor harness is open or shorted
- Poor electrical connection in O2 sensor circuit
How to Fix Code P1139 VOLKSWAGEN?
Start by checking the “possible causes” listed above. Visually inspect the corresponding wiring harness and connectors. Look for damaged components and check for broken, bent, pushed out, or corroded connector pins.
Possible Symptoms
- Engine light on (or service engine soon warning light)
P1139 VOLKSWAGEN Meaning
Fuel System B2 Too Rich is the generic description for Volkswagen code P1139, but the manufacturer may have a different description for your vehicle model and year. Currently, we don’t have more information about Volkswagen OBDII code P1139.