How much does it cost to fix P0161?

Typical repair cost is $100–$350.

P0161 — O2 Sensor Heater Circuit — Bank 2, Sensor 2

Medium Severity · Sensors

OBD-II code P0161 means your vehicle's ECU detected: O2 Sensor Heater Circuit — Bank 2, Sensor 2. Below: causes, step-by-step fixes, and repair cost — free, no signup needed.

Drivable short-term but schedule a diagnosis soon. Prolonged driving can worsen the issue.

Typical Repair Cost

$100–$350

Parts + labor, national average

Severity

Medium

Schedule repair soon

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Common Causes of P0161

Heater failure
Wiring
Fuse

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How to Fix Code P0161

Check fuse

Replace Bank 2 downstream O2

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FAQ — Code P0161

What does OBD-II code P0161 mean?

P0161 means your vehicle's onboard computer detected: O2 Sensor Heater Circuit — Bank 2, Sensor 2. This is a medium-severity code in the Sensors category.

How much does it cost to fix code P0161?

Typical repair cost for P0161 is $100–$350 including parts and labor. Costs vary by vehicle make, model, and location. A free scan at AutoZone or O'Reilly is a good first step.

Can I drive my car with code P0161?

Code P0161 is generally safe for short trips, but have it diagnosed soon to prevent the problem from worsening.

What are the most common causes of P0161?

The most common causes are: Heater failure, Wiring, Fuse. Always start with the cheapest diagnosis step before replacing parts.

Will code P0161 clear itself?

Code P0161 will clear itself after the underlying issue is fixed and the ECU completes several successful drive cycles. Clearing it without fixing the root cause only masks the problem temporarily.

Is P0161 showing on your car?

Enter your VIN for a free vehicle-specific report — recalls, specs, and market value. No signup required.

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OBD-II code data is based on SAE J2012 standards and general repair industry data. Repair costs are national averages and vary by vehicle, location, and shop. Always consult a qualified mechanic for a diagnosis specific to your vehicle.