P0141: O2 Sensor Heater Circuit Malfunction (Bank 1, Sensor 2)
Quick Answer
Safe to drive (short-term)
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.
- Severity
- Low · Emissions
- Estimated repair cost
- From €1 to €370+, varies by vehicle
Scan your own car in about 60 seconds: see whether P0141 is really what it has, how urgent it is, and what the fix should cost. Free on iPhone and Android with an ELM327 adapter (Bluetooth LE on iPhone).
Get Skanyx freeWhat does P0141 mean?
P0141 is a emissions-related diagnostic trouble code classified as low severity. When your vehicle's ECU detects this condition, it stores P0141 and illuminates the check engine light.
Where it is on the car
- Engine
- Oxygen sensor before the converter (sensor 1)
- Catalytic converter
- Oxygen sensor after the converter (sensor 2, or 3 on some cars)
- Silencer and tailpipe
What are the symptoms of P0141?
If your vehicle has triggered P0141, you may notice one or more of these symptoms:
- Check engine light illuminated
- Slightly higher fuel consumption on short trips
- Higher cold-start emissions
- May fail emissions test
- No noticeable driveability symptoms
What causes P0141?
Here are the most common causes of P0141:
Burned-out heater element inside O2 sensor (normal wear with age and mileage)
: high
Corroded or damaged wiring/connector (road salt, heat exposure)
: medium
Blown O2 sensor heater fuse (affects all sensor heaters at once)
: low
Oil or coolant contamination baking onto the heater element
: low
Faulty ECU heater driver circuit (rare)
: low
Is it safe to drive with P0141?
Generally yes, for short-term driving. Safe to drive. The sensor still works once warmed by exhaust heat, so the main effects are higher cold-start emissions and a catalyst monitor that may not complete. If the heater has shorted rather than burned open, it can blow the fuse that the oxygen sensor heaters often share and take the other heaters out with it, so fix it promptly.
How do you diagnose P0141?
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?
Repair costs for P0141 vary depending on the root cause and your vehicle. Here are typical estimates:
| Repair | Parts Cost | Labor Cost | Total Estimate | DIY Difficulty |
|---|---|---|---|---|
| Replace O2 sensor heater fuse | €1–€3 | €0–€0 | €1–€3 | Easy |
| Replace downstream O2 sensor (Bank 1) | €50–€150 | €60–€120 | €110–€270 | Moderate |
| Repair wiring or connector | €5–€20 | €40–€120 | €45–€140 | Moderate |
| Replace O2 sensor (OEM quality) | €80–€250 | €60–€120 | €140–€370 | Moderate |
Prices estimated as of March 2026. Costs vary by region, vehicle, and shop.
Full repair guides
P0141 on specific vehicles
P0141 behaves differently depending on your vehicle. Select your car below for model-specific causes and known issues:
P0141 on Toyota
Toyota Camry
Honda
Honda Civic
2006-2024
Honda Civics use NTK/NGK sensors as OEM. The downstream sensor on the R18A is straightforward to access. On the 1.5T (2016+), the sensor is slightly more recessed but still a 30-minute job. Honda-specific O2 sensor sockets are available for tight clearances.
Volkswagen
Volkswagen Golf
2005-2024
VW uses Bosch sensors as OEM on most Golf models. The EA888 engine's downstream sensor can be tight to access due to the subframe. On TSI models, oil consumption issues can contaminate sensors prematurely, so check oil consumption if replacing sensors frequently.
P0141 on BMW
BMW 3 Series
Related diagnostic codes
These codes are often seen alongside P0141 or indicate related issues:
Common questions about P0141
- Can I drive with P0141?
- Yes. The heater only affects how quickly the sensor reaches operating temperature, and once warm it works normally. The one caution: if the heater has shorted, it can blow the fuse that the oxygen sensor heaters often share, and then the upstream sensor loses its heater too, so get it checked within a few weeks.
- 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?
- There is no fixed lifespan. The heater element is often the first part to fail, and oil contamination and rich running shorten sensor life.
Read our detailed guides
- Next stepHow to Find Out What Is Wrong With Your Car for 15 EurosA 15 euro Bluetooth adapter and a free phone app read the exact fault code a shop charges 30 to 100 euros to pull. Here is how to do it yourself in 5 minutes.
- How to Fix P0141: O2 Heater Repair Cost (Bank 1, Sensor 2)P0141 repair starts with a pennies fuse check, then downstream O2 sensor replacement at €110 to €270 if needed. How to test the heater and fix it yourself.
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- Car Dashboard Symbols and Meanings: Warning Lights ExplainedAn unfamiliar symbol just lit up and you need to know whether to stop. Read the colour first, then find your symbol in the table: every one carries its verdict.
Scan your car with Skanyx to diagnose P0141
Your car logged P0141. Skanyx reads it on a standard OBD2 adapter (Bluetooth LE on iPhone), tells you whether it is safe to keep driving, and shows the €1-€370 repair range so you know the number before a shop quotes you. Free on iPhone and Android, and you do not need to be a mechanic to read it.
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