P1173 MAZDA Possible Causes
- Faulty HO2S-21 sensor
- HO2S-21 sensor harness is open or shorted
- Poor electrical connection in HO2S-21 sensor circuit
How to Fix Code P1173 MAZDA?
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 MAZDA Meaning
HO2S-21 No Change Detected is the generic description for Mazda code P1173, but the manufacturer may have a different description for your vehicle model and year. Currently, we don’t have more information about Mazda OBDII code P1173.