BMW DTC P0141 – O2 Sensor Heater Circuit (Bank 1 Sensor 2)
DTC P0141 meaning on BMW
DTC P0141 indicates a fault in the O2 sensor heater circuit for Bank 1 Sensor 2 in a BMW vehicle. This code specifically points to an issue with the heating element of the downstream oxygen sensor located after the catalytic converter on the bank 1 side of the engine.
BMW DTC P0141 symptoms
Symptoms of DTC P0141 in a BMW may include poor fuel economy, rough idling, engine misfires, hesitation during acceleration, and an illuminated Check Engine Light on the dashboard.
BMW DTC P0141 causes
The common causes of DTC P0141 on a BMW are a faulty oxygen sensor heater, damaged wiring or connectors in the sensor circuit, a blown fuse related to the sensor heater, or a problem with the Engine Control Module (ECM).
BMW DTC P0141 seriousness
While DTC P0141 may not cause immediate drivability issues, it can lead to increased emissions, reduced fuel efficiency, and potential damage to the catalytic converter over time if left unresolved. It is recommended to address this code promptly.
How to diagnose DTC P0141 on BMW
To diagnose DTC P0141 on a BMW, start by checking the fuse related to the O2 sensor heater circuit. Inspect the wiring and connectors for any signs of damage or corrosion. Use a multimeter to test the resistance of the O2 sensor heater. If the sensor heater resistance is out of specification, it may need to be replaced.
How to fix DTC P0141 on BMW
To fix DTC P0141 on a BMW, replace the faulty oxygen sensor heater if it is determined to be the cause of the issue. Repair any damaged wiring or connectors in the sensor circuit. Ensure that the fuse related to the sensor heater is in good condition. Clear the fault code and test drive the vehicle to verify that the issue has been resolved.
How to erase DTC P0141 on BMW
To erase DTC P0141 on a BMW, you can use an OBD-II scanner to clear the fault code from the Engine Control Module (ECM). After fixing the underlying issue causing the fault code, clearing the code will reset the Check Engine Light. Make sure the repair has been successful by performing a final scan to confirm that the DTC P0141 has been erased.
Recommended tools & DTC Scanners for BMW
Best Diagnostic App for modern BMWs: BimmerLink
Recommended Bluetooth adapter for Bimmerlink: OBDLink CX
Cable adapter for Bimmerlink: Enet Cable USB Type C
For older BMWs we recommend: Autel AutoLink AL319 (2024 version)
Easy-to-use Multimeter for reliable diagnostics: AstroAI Auto-ranging Multimeter
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