P117F Possible Causes
- Faulty oxygen sensor
- Oxygen sensor harness is open or shorted
- Poor electrical connection in oxygen sensor circuit
- Misfire
- Rich/lean air-fuel ratio
How to Fix Code P117F?
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)
P117F Meaning
The Engine Control Module (ECM) monitors the oxygen sensor in row 4. The ECM sets the OBDII code when the oxygen sensor in bank 4 does not meet factory specifications.