P1157 MAZDA Possible Causes
- Faulty HO2S-12
- HO2S-12 harness is open or shorted
- Poor electrical connection in HO2S-12 circuit
How to Fix P1157 MAZDA 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.
The Engine Control Module (ECM) did not detect a rich signal during testing
Possible Symptoms
- Engine light on (or engine service warning light soon)
P1157 MAZDA Meaning
The HO2S-12 circuit condition is the generic description for Mazda code P1157, but the manufacturer may have a different description for your vehicle model and year. Currently, we do not have more information about the Mazda P1157 OBDII code.