P1173 Possible Causes
- Exhaust leak
- Faulty heated front O2 sensor
- Heated front O2 sensor harness is open or shorted
- Heated front O2 sensor circuit poor electrical connection
How to Fix Code P1173?
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)
P1173 Meaning
The Heated Front O2 Sensor No Switching is the generic description for the P1173 code, but the manufacturer may have a different description for your vehicle’s model and year. Currently, we have no further information about the OBDII P1173 code.