P0141

O2 Sensor Heater Circuit Malfunction (Bank 1 Sensor 2)

Severity: Low Fuel & Air Metering Generic OBD-II Code Est. Repair: $80 - $200

Usually safe to drive short-term, but diagnose soon.

What Does P0141 Mean?

Heater circuit for downstream O2 on bank 1 failed.

Common Symptoms

CEL
Usually no drivability symptoms

Possible Causes

Failed downstream heater
Wiring
Fuse

How to Fix P0141 – Repair Guide

Check fuse and resistance
Replace downstream O2
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Recommended OBD2 Scanners & Tools

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Disclaimer: Information is for educational reference only and does not replace professional diagnosis. Actual causes and costs vary by vehicle make, model, year and condition. Always verify with a qualified technician.