P0135
O2 Sensor Heater Circuit Bank 1 Sensor 1
P0135 is an OBD-II diagnostic trouble code meaning: O2 Sensor Heater Circuit Bank 1 Sensor 1. Common causes: open or shorted oxygen sensor heating circuit, sensor heating element malfunction. Estimated repair cost: $56–167.
Symptoms
- Deterioration in acceleration dynamics
- Increased fuel consumption
- Unstable engine operation at idle
- Check Engine Light Illuminates
Causes
- Open or shorted oxygen sensor heating circuit
- Sensor heating element malfunction
- Wiring harness damage
- Problems with the heating circuit relay or fuse
How to Fix
- Check the integrity of the fuse and heating circuit relay
- Check the resistance of the sensor heating element
- Inspect the wiring harness for damage
- If necessary, replace the oxygen sensor
Related codes
Error P0135 by Vehicle Brand
FAQ
What does the P0135 code mean?
P0135 is an OBD-II diagnostic trouble code that indicates: O2 Sensor Heater Circuit Bank 1 Sensor 1
What causes a P0135 error code?
The most common causes of P0135 include: Open or shorted oxygen sensor heating circuit; Sensor heating element malfunction; Wiring harness damage; Problems with the heating circuit relay or fuse.
How do I fix a P0135 diagnostic trouble code?
To fix P0135: Check the integrity of the fuse and heating circuit relay. Check the resistance of the sensor heating element. Inspect the wiring harness for damage. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P0135?
Limited driving only, diagnose soon
How much does it cost to fix P0135?
The estimated repair cost for P0135 is $56–167. Actual cost depends on your vehicle, location, and labor rates.
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