Ask Andy AIP0141 O2 Sensor Heater Circuit Malfunction (Bank 1 Sensor 2)
What it means, what causes it, and what it costs to fix.
What P0141 means
The heater in the downstream (after-converter) oxygen sensor on bank 1 has failed, or its circuit is open or shorted.
Can I drive with P0141?
Severity: Low. Not urgent. Fix it when convenient.
Safe to drive.
Get a diagnosis for your exact car
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Ask Andy about P0141Symptoms
- Check engine light
- Failed emissions readiness monitors
Common causes
Most likely first.
- Failed heater in the rear O2 sensor
- Blown fuse
- Wiring damaged by road debris or exhaust heat
How to diagnose P0141
- Check the fuse.
- Measure the sensor's heater resistance.
- Inspect the harness under the car.
Tip: most US auto parts stores will read your codes for free.
Repair costs
| Rear O2 sensor | $120–$300 installed |
Typical US prices. Your vehicle, region, and shop rates will change these.
P0141 FAQ
What does P0141 mean?
P0141 means "O2 Sensor Heater Circuit Malfunction (Bank 1 Sensor 2)." The heater in the downstream (after-converter) oxygen sensor on bank 1 has failed, or its circuit is open or shorted.
Can I drive with a P0141 code?
Safe to drive.
What is the most common cause of P0141?
The most common cause is: Failed heater in the rear O2 sensor. Other causes include blown fuse and wiring damaged by road debris or exhaust heat.
How much does it cost to fix P0141?
Typical repairs run about $120 to $300 in the US, depending on the cause. Rear O2 sensor: $120–$300 installed.
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