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P0135 — O2 Sensor Heater Circuit (Bank 1 Sensor 1)

Fault in the upstream O2 sensor heater circuit on bank 1.

Severity: MediumRepair: $80-$300Difficulty: Easy

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Common symptoms of P0135

Common causes of P0135

Repair cost & difficulty

Typical cost to fix P0135: $80-$300 · Difficulty: Easy

Pro tip: Check O2 heater fuse before replacing sensor.

Vehicles commonly affected

All makes

Related trouble codes

P0030P0141

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ScanFixAI is a diagnostic aid, not a substitute for professional repair. Cost estimates are typical ranges and vary by vehicle and region.