P0141Severity: Medium
P0141 – Oxygen Sensor Heater Circuit (Bank 1 Sensor 2)
A fault in the downstream O2 sensor's heater circuit.
What it means
The post-catalyst oxygen sensor's heater circuit isn't working. The sensor reaches operating temperature late, affecting catalyst monitoring.
Symptoms
- Check-engine light
- Emissions readiness issues
Common causes
- Faulty sensor heater
- Blown fuse
- Wiring/connector issue
- Relay failure
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Frequently asked questions
What does trouble code P0141 mean?
P0141 – Oxygen Sensor Heater Circuit (Bank 1 Sensor 2). The post-catalyst oxygen sensor's heater circuit isn't working. The sensor reaches operating temperature late, affecting catalyst monitoring.
Can I drive with a P0141 code?
You can usually drive short distances, but it's best to have it checked before it gets worse.