P0141 O2 Sensor Heater Circuit (Bank 1, Sensor 2)
What does P0141 mean?
P0141 — O2 Sensor Heater Circuit (Bank 1, Sensor 2) (bank 1). This is an OBD-II diagnostic trouble code a scanner retrieves when your vehicle's computer detects o2 sensor heater circuit (bank 1, sensor 2) on bank 1. The level of risk depends on how the vehicle is currently running and how long you've been driving with the light on.
Common causes of P0141
- Blown sensor heater fuse
- Open or shorted heater wiring
- Failed downstream sensor heater
- Corroded connector
How to fix P0141
- Check the heater fuse for the downstream sensor
- Measure the sensor's heater resistance
- Verify heater power and ground at the connector
- Replace the sensor if the heater is open or shorted
- Repair wiring and clear the code