P1138 VOLKSWAGEN Possible Causes
- Intake air leak
- Faulty O2 sensor
- Faulty mass air flow (MAF) sensor
- O2 sensor harness is open or shorted
- Poor electrical connection in O2 sensor circuit
How to Fix Volkswagen P1138 Code?
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
- Check engine light on (or service engine soon warning light)
P1138 VOLKSWAGEN Meaning
Fuel System B2 Too Lean is the generic description for Volkswagen P1138 code, but the manufacturer may have a different description for your vehicle model and year. Currently, we have no further information about Volkswagen P1138 OBDII code.