P0141 means the heater circuit in your Bank 1 downstream (post-catalyst) oxygen sensor has failed. The heater brings the sensor to operating temperature quickly after a cold start. Without it, the sensor takes several minutes to warm up naturally from exhaust heat.
DTC/P0141·BMW
P0141 on BMW: Causes, Symptoms and Fix Cost
Quick Answer
Low SeveritySafe to drive (short-term)BMW
P0141 on a BMW means the heater circuit in your Bank 1 downstream (post-catalyst) oxygen sensor has failed. The heater brings the sensor to operating temperature quickly after a cold start. Without it, the sensor takes several minutes to warm up naturally from exhaust heat.
Repair cost on BMW€1 - €518
What does P0141 mean on a BMW?
BMW 3 Series
2006-2024BMW uses Bosch sensors. The N52 downstream sensor is accessible but may require removing an underbody panel. N55 and B48 turbo models have the sensor closer to the turbo, where heat cycling is more extreme, leading to earlier heater failure. BMW OEM sensors are expensive (120-200 euros) but aftermarket Bosch units are identical.
What causes P0141 on a BMW?
Beyond the generic causes listed on the main P0141 page, these are the BMW-specific patterns we see most often:
BMW 3 SeriesAccelerated heater wear on N55/B48 due to higher exhaust temperatures near turbo
BMW 3 SeriesBMW OEM sensor premium pricing (aftermarket Bosch is identical for less)
How to diagnose P0141 on a BMW with OBD2
Follow these steps to pinpoint the root cause of P0141:
- Check for multiple heater codes (P0135, P0155, P0161). Multiple codes suggest a shared fuse or wiring issue, not individual sensor failures
- Check the O2 sensor heater fuse in the fuse box. Replace if blown and monitor for recurrence
- Unplug the Bank 1 Sensor 2 connector and measure heater resistance with a multimeter. Healthy: 2-15 ohms. Open circuit (infinite): burned-out heater. Under 1 ohm: short circuit
- Inspect the sensor connector for corrosion, bent pins, or water intrusion
- Trace wiring from connector toward ECU, checking for chafing or damage against heat shields or exhaust components
How much does P0141 cost to fix on a BMW? (EUR)
Estimated repair costs on a BMW (BMW parts and labour typically run 40% above the average for this code).
Prices estimated as of May 2026. Costs vary by region, vehicle, and shop.
Related codes that often appear with P0141 on BMW
These codes commonly cluster with P0141 on BMW vehicles:
FAQ: P0141 on BMW
Can I drive with P0141?
Yes, completely safe. The heater only affects how quickly the sensor reaches operating temperature. Once warm, it works normally. You'll use slightly more fuel during the first few minutes after a cold start.
What is the most common fix for P0141?
Replacing the downstream oxygen sensor on Bank 1. The heater element burns out over time and cannot be repaired separately. Costs 110-270 euros on most vehicles.
Can a blown fuse cause P0141?
Yes. O2 sensor heaters share a fuse. If it blows, you'll see multiple heater codes at once (P0141, P0135, P0155, P0161). Check the fuse before buying a new sensor.
How long do oxygen sensors last?
Most last 80,000-150,000 km. The heater element is typically the first component to fail. Oil contamination and rich running shorten sensor life.
Looking for the full P0141 reference (all makes, full diagnosis flow, complete repair cost matrix)?
See the main P0141 guideSkanyx · BMW
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