Engine-CodesBuick – P1175 Buick

P1175 Buick Code - Fuel Trim Cylinder Balance Bank 2

Quick Answer

The P1175 Buick code indicates a problem with the Fuel Trim Cylinder Balance on Bank 2 of the vehicle's engine. Common causes include Faulty oxygen sensor, Vacuum leaks, Fuel injector issues. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means
P1175 Buick indicates Fuel Trim Cylinder Balance Bank 2.
Common causes
Common causes include Faulty oxygen sensor, Vacuum leaks, Fuel injector issues.
Severity
High - diagnose this code as soon as possible.
Can I drive?
Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
Table of contents Created and updated by William Orellana on Sep 10, 2024
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Code P1175 Buick Description

The P1175 Buick code indicates a problem with the Fuel Trim Cylinder Balance on Bank 2 of the vehicle's engine. This code specifically relates to the balance of fuel mixture being delivered to the cylinders on the specified bank, which can have a direct impact on the engine's performance and efficiency. When the fuel trim is not balanced correctly, it can lead to issues such as poor fuel economy, decreased engine power, rough idling, and potentially even engine misfires.

OBDII Code P1175 Buick - Fuel Trim Cylinder Balance Bank 2
P1175 Buick Code - Fuel Trim Cylinder Balance Bank 2

Common Causes of P1175 Buick

  1. Faulty oxygen sensor
  2. Vacuum leaks
  3. Fuel injector issues
  4. Dirty or clogged fuel injectors
  5. Faulty fuel pressure regulator

Symptoms of P1175 Buick

  1. Decreased fuel efficiency
  2. Rough idling or stalling
  3. Engine misfires
  4. Loss of engine power
  5. Check Engine Light illuminated

How to Fix P1175 Buick

  1. Diagnose the specific cylinder balance issue on Bank 2 using a scan tool to monitor fuel trim data.
  2. Inspect and test the oxygen sensor on Bank 2 to ensure it is functioning correctly.
  3. Check for vacuum leaks in the intake manifold or vacuum lines and repair as necessary.
  4. Clean or replace fuel injectors on Bank 2 to ensure proper fuel delivery.
  5. Test and potentially replace the fuel pressure regulator if it is not maintaining the correct fuel pressure.

Cost to Fix P1175 Buick

The cost to repair a P1175 Buick code can vary depending on the specific cause of the issue and the labor rates in your area. On average, you can expect to pay anywhere from $200 to $500 for parts and labor to address this problem. Keep in mind that diagnostic time and labor rates at auto repair shops can vary, so it's best to get a few quotes to ensure you are getting a fair price for the repair.

Tech Notes for P1175 Buick

The P1175 code sometimes is triggered by clogged fuel injectors. Start by using high octane fuel and/or fuel additive to clean injectors. If the problem persists fuel injectors may need to be replaced.



There is a Factory Service Bulletin for all 2000-2013 Buick models:

2000-2013 Buick Factory Service Bulletin OBDII Code P1175

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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.

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