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P0159 — O2 Sensor Slow Response (Bank 2 Sensor 2)

Bank 2 downstream O2 sensor switching too slowly.

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

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Common symptoms of P0159

Common causes of P0159

Repair cost & difficulty

Typical cost to fix P0159: $80-$250 · Difficulty: Easy

Pro tip: Replace sensor if failing; can cause false P0430.

Vehicles commonly affected

V6/V8 engines

Related trouble codes

P0156P0160P0430

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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.