P0141 OBD-II Trouble Code: O2 Sensor Heater Circuit Malfunction (Bank 1, Sensor 2)

Our certified mechanics come to you · 12-month, 12,000-mile warranty

SCHEDULE P0141 DIAGNOSTIC Get a fair and transparent estimate upfront
Red-stars EXCELLENT RATING ON

Cost of diagnosing the P0141 code

P0141 is a diagnostic trouble code (DTC) for "O2 Sensor Heater Circuit Malfunction (Bank 1, Sensor 2)". This can happen for multiple reasons and a mechanic needs to diagnose the specific cause for this code to be triggered in your situation. Our certified mobile mechanics can come to your home or office to perform the Check Engine Light diagnostic for $70.00. Once we are able to diagnose the problem, you will be provided with an upfront quote for the recommended fix and receive $30.00 off as a credit towards the repair. All our repairs are backed by our 12-month / 12,000-mile warranty.

Cars Estimate Credit towards follow-up repair Earliest Availability
Ford$70.00$30.00
Toyota$70.00$30.00
BMW$70.00$30.00
SCHEDULE P0141 DIAGNOSTIC Get a fair and transparent estimate upfront

Check Engine Light

P0141 code definition

O2 Sensor Heater Circuit Malfunction (Bank 1, Sensor 2)

What the P0141 code means

P0141 is the OBD-II generic code indicating the Engine Control Module (ECM) has tested the O2 sensor heater circuit and detects a problem with the bank 1 sensor 2 oxygen sensor heater circuit.

What causes the P0141 code?

  • The ECM tests the O2 sensor heater circuits at first startup and detects a short or open circuit, or an excessive current draw in the O2 bank 1 sensor 2 heater circuit.

What are the symptoms of the P0141 code?

  • The engine may run excessively rich since the engine is in open loop.
  • The engine may run rough and start to foul out spark plugs, causing misfires.
  • The Check Engine Light will be illuminated.

How does a mechanic diagnose the P0141 code?

  • Checks the electrical connections or wire harness cover to the O2 bank 1 sensor 2
  • Scans codes and documents freeze frame data, then clears codes to verify failure
  • Monitors O2 sensor data to see if the heater circuit is working for bank 1 sensor 2
  • Checks the O2 sensor heater circuit for power
  • Checks the O2 sensor heater circuit for the proper resistance to specifications
  • Follows the manufacturer's specific pinpoint tests for further diagnosis

Common mistakes when diagnosing the P0141 code?

Follow these simple guidelines to prevent misdiagnosis:

  • Check the O2 wire harness for water entry into the harness cover causing sensor shorts.

  • Check the O2 sensor for oil or coolant contaminants from engine leaks.

  • Scan the new O2 sensor to make sure the heater circuit works properly after replacement.

  • Check the removed O2 sensor for damage from a defective catalyst by breaking the sensor or clogging sensor holes.

How serious is the P0141 code?

  • The code is for the sensor behind the catalyst on the bank 1 of the engine.

  • O2 sensors are the fuel control feedback the ECM needs to properly control the injectors.

  • The ECM may stay in open loop until the O2 system is repaired or the O2 sensor starts working again.

  • The engine stuck in open loop will run extra rich and will burn more fuel and start to carbon up.

What repairs can fix the P0141 code?

  • Clearing the fault codes and performing a road test to try and verify a failure
  • Replacing the O2 sensor for bank 1 sensor 2
  • Repairing or replacing the wiring or connection to the O2 sensor for bank 1 sensor 2
  • Replacing the fuse to the heater circuit for the O2 sensor heater circuit

Additional comments for consideration regarding the P0141 code

The O2 sensor heater circuit for bank 1 sensor 2 is used to heat the internal parts of the O2 sensor on bank 1 sensor 2 only, and the code can be isolated just to this sensor.

Need help with a P0141 code?

YourMechanic offers certified mobile mechanics who will come to your home or office to diagnose and repair your vehicle. Get a quote and book an appointment online or speak to a service advisor at 1-800-701-6230.

Check Engine Light
P0141

Fast and easy Check Engine Light is on Inspection service at your home or office.

SCHEDULE P0141 DIAGNOSTIC
Get a fair and transparent estimate upfront

Recent Check Engine Light is on Inspection reviews

Excellent Rating


YourMechanic Check Engine Light is on Inspection Service

Average Rating

4.5/5

Number of Reviews

3,901

Rating Summary
3,566
166
43
25
101
3,566
166
43
25
101

Robert

31 years of experience
88 reviews
Robert
31 years of experience
Excellent,was kind and very knowledgeable would use him every time,glad you sent him to me.
2005 NISSAN PATHFINDER - CHECK ENGINE LIGHT IS ON - POWDER SPRINGS, GEORGIA

Troy

37 years of experience
56 reviews
Troy
37 years of experience
Troy is a consumate professional and a great guy to boot.
2005 FORD EXPEDITION - CHECK ENGINE LIGHT IS ON - PHOENIX, ARIZONA

Aaron

7 years of experience
71 reviews
Aaron
7 years of experience
Aaron was very friendly and professional! Came out to my apartment and completed the work in about half the estimated time, both times he came out to work on my car. Would definitely recommend him as your mechanic!
2010 DODGE AVENGER - CHECK ENGINE LIGHT IS ON - AUSTIN, TEXAS

Chris

8 years of experience
223 reviews
Chris
8 years of experience
Chris was awesome. He saved me a ton of money and was very nice! Reliable, fast, and honest!
2010 NISSAN SENTRA - CHECK ENGINE LIGHT IS ON - MARICOPA, ARIZONA

More related articles

P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...
How to Buy Fuel Treatments
Adding a fuel additive to your gas tank when you fill up is one way to clean vital engine parts of deposits, improve the performance of your engine,...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...

Related questions

Q: Periodically vehicle runs rough at idle.

Hi there. Most of the codes that are coming on are for a misfire on cylinder number 3. Check the spark plug and wire on cylinder 3 and see if you are getting a good spark. Then check the fuel...

Q: Engine Malfunction, power reduced

Hello, and thank you for writing in. You are thinking in the right direction. Start by inspecting the throttle body, air intake, and the throttle and intake sensors. Make sure the electrical connections are all clean, dry, and tight. You...

Q: The belt came off the pulleys

One of the first things that should be checked when dealing with a serpentine belt that has come off would be to check that all of the pulleys that are used for power steering, water pump, idler pulleys, alternator, crankshaft,...

How can we help?

Our service team is available 7 days a week, Monday - Friday from 6 AM to 5 PM PST, Saturday - Sunday 7 AM - 4 PM PST.

1-800-701-6230 · hi@yourmechanic.com