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P2195 — O2 Sensor Signal Biased/Stuck Lean (Bank 1 Sensor 1)

The upstream O2 sensor on bank 1 is consistently reading lean and not switching normally.

Severity: MediumRepair: $80-$400Difficulty: Easy

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Common symptoms of P2195

Common causes of P2195

Repair cost & difficulty

Typical cost to fix P2195: $80-$400 · Difficulty: Easy

Pro tip: On Ford vehicles, this is very common. Check for vacuum leaks and clean/test the MAF sensor before replacing the O2 sensor.

Vehicles commonly affected

Ford (very common Ford O2 sensor code)

Related trouble codes

P0131P0133P0171

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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.