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P0157 — O2 Sensor Circuit Low Voltage (Bank 2 Sensor 2)

Bank 2 downstream O2 reading lean.

Severity: MediumRepair: $80-$250Difficulty: Easy

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Common symptoms of P0157

Common causes of P0157

Repair cost & difficulty

Typical cost to fix P0157: $80-$250 · Difficulty: Easy

Pro tip: Replace sensor if P0430 is also present.

Vehicles commonly affected

V6/V8 engines

Related trouble codes

P0156P0158P0430

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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.