AutoCodesBuick – P0141 Buick

P0141 Buick Code - HO2S Heater Performance Bank 1 Sensor 2

Quick Answer

Heated Oxygen Sensors (HO2S) are used for fuel control and post catalyst monitoring. Common causes include Faulty Heated Oxygen Sensor (H2OS) Bank 1 Sensor 2, Heated Oxygen Sensor Bank 1 Sensor 2 harness is open shorted, Heated Oxygen Sensor Bank 1 Sensor 2 circuit poor electrical connection. Severity is Moderate - service should be scheduled soon. The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.

What it means
P0141 Buick indicates HO2S Heater Performance Bank 1 Sensor 2.
Common causes
Common causes include Faulty Heated Oxygen Sensor (H2OS) Bank 1 Sensor 2, Heated Oxygen Sensor Bank 1 Sensor 2 harness is open shorted, Heated Oxygen Sensor Bank 1 Sensor 2 circuit poor electrical connection.
Severity
Moderate - service should be scheduled soon.
Can I drive?
The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.
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Code Popularity 45,756
How popular is this code, among other codes? Medium
Table of contents Created and updated by William Orellana on Aug 22, 2022
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Code P0141 Buick Description

Heated Oxygen Sensors (HO2S) are used for fuel control and post catalyst monitoring. Each HO2S compares the oxygen content of the surrounding air with the oxygen content in the exhaust stream. The HO2S must reach an operating temperature to provide an accurate voltage signal. A heating element inside the HO2S minimizes the time required for the sensors to reach operating temperature. Voltage is provided to the heater by an ignition voltage circuit through a fuse. With the engine running, the ground is provided to the heater by the HO2S heater low control circuit through a low side driver within the Engine Control Module (ECM). The ECM uses Pulse Width Modulation (PWM) to control the HO2S heater operation to maintain a specific HO2S operating temperature range.
The Diagnostic Trouble Code (DTC) will be set when the ECM detects that the HO2S 2 heater current is out of factory specifications.
OBDII Code P0141 Buick - HO2S Heater Performance Bank 1 Sensor 2 - AutoCodes.com
P0141 Buick Code - HO2S Heater Performance Bank 1 Sensor 2

What are the Possible Causes of the DTC P0141 Buick?

  • Faulty Heated Oxygen Sensor (H2OS) Bank 1 Sensor 2
  • Heated Oxygen Sensor Bank 1 Sensor 2 harness is open shorted
  • Heated Oxygen Sensor Bank 1 Sensor 2 circuit poor electrical connection
  • Heated Oxygen Sensor Bank 1 Sensor 2 circuit fuse
  • Faulty Engine Control Module (ECM)

How to Fix the DTC P0141 Buick?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

Code Tech Notes

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0141 Buick code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P0141 Buick Code

No Frequently Asked Questions about P0141 Buick Code found.

Discuss the causes and fixes for P0141 Buick OBDII Code

  • Does this cause the windows to fog up Easier

  • Not at all.

  • Can anybody answer this question? On a 2001 Buick 3.8 liter I have a po141 code witch is o2 sensor bank 1 sensor 2 witch one is it the one before the cat or after the cat?

  • What model? Regal, LaSabre?
    "Sensor 2" means is the rear O2 sensor

    Sensor 2 = Rear Sensor = Downstream Sensor = After Catalytic Sensor

  • Had this come up just when my exhaust system went, would this go off because of holes in the tail pipe/muffler?

  • Yes. Holes in the exhaust system could alter the O2 sensors reading, but don't be surprise if the sensor has failed as well. O2 sensor problems are very common.

  • please help. i am using nissan tiida 2008 model. just of recent any rime i am driving and i get caught up in traffic, any slight attempt to accelerate or turtle d car it suddenly turn off.i.e d car go dead and i have to restart it and this process often continue any time i find my self in any traffic. on diagnosis it shows 02 sensor (pending). my question is ...... can 02 sensor cause power to cut off while driving?

  • No, the O2 sensor will not cause that type of problems.

    P0141 NISSAN - Rear Sensor Heater Circuit Malfunction Bank 1 Sensor 2
    Read more: https://www.autocodes.com/p...

  • 03 Buick rendezvous code shows P0141 wood that make it difficult for the tranny to change gears and for it to overheat

  • No, a bad Oxygen sensor won't cause transmission problems or the engine overheat.

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