P1291 AUDI code possible causes
- Faulty engine coolant temperature sensor
- Engine coolant temperature sensor harness is open or shorted
- Poor electrical connection in engine coolant temperature sensor circuit
How is the AUDI P1291 code repair performed?
Start by checking the “Possible Causes” listed above. Visually inspect the wiring harness and associated connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.
What are the possible symptoms of AUDI P1291 code?
- Check engine light on (or Service Engine Soon warning light)
What does AUDI P1291 code mean?
Engine Coolant Temperature Sensor High Input is the generic description for Audi P1291 code, but the manufacturer may have a different description for your vehicle model and year. Currently, we have no further information about the Audi P1291 OBDII code.