P0155 Fault Code — O2 Sensor Heater Circuit (Bank 2 Sensor 1)

Severity: 🟡 Medium — diagnose within a week

Bank 2 upstream O2 heater failure.

Common Symptoms

Common Causes

How We Fix It

Replace O2 sensor, check heater circuit.

Frequently Asked Questions

What does P0155 mean?

P0155 (O2 Sensor Heater Circuit (Bank 2 Sensor 1)) means Bank 2 upstream O2 heater failure. Common symptoms include mil on, slow warm-up on bank 2.

How much does P0155 repair cost in Hyderabad?

At GarageNation Hyderabad, we diagnose P0155 with dealer-grade scan tools and provide a fixed quote before any work begins. Call +91 8106316369 for an estimate.

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