P1148 AUDI Possible Causes
- Faulty HO2S21
- Mass Air Flow (MAF) sensor
- HO2S21 harness open or shorted
- Poor electrical connection in HO2S21 circuit
How to fix P1148 AUDI 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 AUDI Meaning
HO2S21 System Too Rich is the generic description for Audi P1148 code, but the manufacturer may have a different description for your vehicle model and year. Currently, we don’t have more information about the Audi P1148 OBDII code.