What does code P1137 mean on Mazda vehicles?
The heated oxygen sensor on bank 1 sensor 2 is not switching, causing the fuel control system to reach its correction limit.
OBD-II Code Mazda
P1137 — Mazda — HO2S Bank 1 Sensor 2 Not Switching (Fuel Control Limit Reached)
The heated oxygen sensor on bank 1 sensor 2 is not switching, causing the fuel control system to reach its correction limit.
Common symptoms
- Increased emissions
- failed emissions test
Possible causes
- Failed oxygen sensor
- exhaust contamination
Initial recommendation
Replace oxygen sensor and verify exhaust system condition.
Safety notice
This information is for guidance only. Brand-specific codes may vary by model, year, engine, transmission and vehicle configuration. It does not replace a physical inspection or diagnosis by a qualified mechanic. If the vehicle is unsafe to operate, avoid driving it and seek professional inspection.
Analyze this code with MecaOBD
Use the app to combine Mazda code P1137 with your vehicle's actual symptoms for more complete diagnostic guidance.
Go to the app View more brands