P1148 VOLKSWAGEN Possible Causes
- Faulty HO2S21
- Faulty Mass Air Flow (MAF) Sensor
- HO2S21 harness is open or shorted
- Poor electrical connection in HO2S21 circuit
How to Fix P1148 VOLKSWAGEN 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
- Engine Light On (or Service Engine Soon Warning Light)
P1148 VOLKSWAGEN Meaning
HO2S21 System Too Rich is the generic description for Volkswagen code P1148, but the manufacturer may have a different description for your vehicle model and year. Currently, we have no further information about Volkswagen OBDII code P1148.