What does code P1135 mean on Mazda vehicles?
The oxygen sensor heater circuit voltage is lower than expected.
OBD-II Code Mazda
P1135 — Mazda — HO2S Bank 1 Sensor 1 Heater Circuit Low Input
The oxygen sensor heater circuit voltage is lower than expected.
Common symptoms
- Check engine light
Possible causes
- Short circuit to ground
- wiring fault
Initial recommendation
Inspect heater circuit wiring and repair short circuits.
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 P1135 with your vehicle's actual symptoms for more complete diagnostic guidance.
Go to the app View more brands