Engine-CodesChevrolet – P1175 Chevrolet

P1175 Chevrolet Code - Fuel Trim Cylinder Balance Bank 2

Quick Answer

The P1175 diagnostic trouble code for Chevrolet vehicles refers to "Fuel Trim Cylinder Balance Bank 2." This code indicates that there is an imbalance in the air-to-fuel ratio in one of the engine's cylinders on bank 2. Common causes include Vacuum leak in the intake system, Faulty oxygen sensor on bank 2, Clogged fuel injector on bank 2. 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 Chevrolet indicates Fuel Trim Cylinder Balance Bank 2.
Common causes
Common causes include Vacuum leak in the intake system, Faulty oxygen sensor on bank 2, Clogged fuel injector on bank 2.
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 07, 2024
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Code P1175 Chevrolet Description

The P1175 diagnostic trouble code for Chevrolet vehicles refers to "Fuel Trim Cylinder Balance Bank 2." This code indicates that there is an imbalance in the air-to-fuel ratio in one of the engine's cylinders on bank 2. The engine control module (ECM) constantly monitors the air-to-fuel ratio to ensure optimal combustion and performance. When there is a discrepancy in the fuel trim levels between cylinders on bank 2, it can lead to poor engine performance, increased emissions, and potential damage to the catalytic converter over time.

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

Common Causes of P1175 Chevrolet

  1. Vacuum leak in the intake system
  2. Faulty oxygen sensor on bank 2
  3. Clogged fuel injector on bank 2
  4. Issue with the fuel pressure regulator on bank 2
  5. Problems with the intake system on bank 2

Symptoms of P1175 Chevrolet

  1. Rough idling
  2. Reduced fuel efficiency
  3. Hesitation or surging during acceleration
  4. Engine misfires
  5. Check engine light illuminated on the dashboard

How to Fix P1175 Chevrolet

  1. Diagnose the specific cause of the imbalance in fuel trim levels on bank 2 using a diagnostic scanner to read live data and pinpoint the issue.
  2. Inspect the intake system for any vacuum leaks and repair or replace any damaged components.
  3. Test the oxygen sensor on bank 2 to ensure it is functioning properly and replace if necessary.
  4. Clean or replace the clogged fuel injector on bank 2 to restore proper fuel delivery.
  5. Check the fuel pressure regulator on bank 2 and replace if it is faulty to regulate fuel pressure accurately.

Cost to Fix P1175 Chevrolet

The typical repair costs for resolving the P1175 Chevrolet code can vary depending on the specific cause of the issue and the labor rates at the auto repair shop. On average, the repair costs for this issue can range from $200 to $500, including parts and labor. However, it's important to note that diagnosis time and labor rates can vary based on factors such as location, vehicle make and model, and engine type. It is advisable to check with local auto repair shops for a more accurate estimate based on individual circumstances.

Tech Notes for P1175 Chevrolet

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 Chevrolet models:
2000-2013 Chevrolet 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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