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P1155 — Air-Fuel Sensor Heater Circuit Response (Bank 2 Sensor 1)

Toyota-specific: Bank 2 A/F sensor heater not warming up properly.

Severity: MediumRepair: $100-$350Difficulty: Easy

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Common symptoms of P1155

Common causes of P1155

Repair cost & difficulty

Typical cost to fix P1155: $100-$350 · Difficulty: Easy

Pro tip: Same diagnosis as P1135 for bank 2.

Vehicles commonly affected

Toyota/Lexus

Related trouble codes

P0155P1135

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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.