P0174 2017 GMC Sierra Code - Fuel Trim System Lean Bank 2
Quick Answer
The P0174 code for a 2017 GMC Sierra indicates a Fuel Trim System Lean Bank 2 condition. Common causes include Vacuum leaks, Faulty oxygen sensor, Clogged fuel filter. 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
- P0174 2017 GMC Sierra indicates Fuel Trim System Lean Bank 2.
- Common causes
- Common causes include Vacuum leaks, Faulty oxygen sensor, Clogged fuel filter.
- 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.
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Code P0174 2017 GMC Sierra Description
The P0174 code for a 2017 GMC Sierra indicates a Fuel Trim System Lean Bank 2 condition. This means that the engine control module (ECM) has detected that the air-fuel mixture is too lean on the second bank of cylinders. The fuel trim system is responsible for adjusting the air-fuel mixture to maintain optimal combustion in the engine. When the system detects a lean condition, it means that there is too much air and not enough fuel in the mixture.
Common Causes of P0174 2017 GMC Sierra
- Vacuum leaks
- Faulty oxygen sensor
- Clogged fuel filter
- Malfunctioning mass airflow sensor
- Issues with fuel injectors
Symptoms of P0174 2017 GMC Sierra
- Rough idle
- Hesitation or stumbling during acceleration
- Decreased fuel efficiency
- Check Engine Light illuminated
- Engine misfires
How to Fix P0174 2017 GMC Sierra
- Perform a thorough inspection of the intake system for any vacuum leaks and repair as necessary.
- Check the oxygen sensor for proper operation and replace if faulty.
- Replace the fuel filter to ensure proper fuel flow.
- Inspect the mass airflow sensor for any dirt or debris and clean or replace as needed.
- Test and clean the fuel injectors or replace if they are not functioning correctly.
Cost to Fix P0174 2017 GMC Sierra
The cost of repairing a P0174 code on a 2017 GMC Sierra can vary depending on the specific cause of the lean condition and the cost of parts and labor. On average, the repair costs for this issue can range from $200 to $500. This estimate includes the cost of parts such as oxygen sensors, fuel filters, and fuel injectors, as well as labor costs for diagnosis and repair. It is important to note that labor rates at auto repair shops can vary, so it is recommended to obtain quotes from multiple shops to ensure a competitive price.
Tech Notes for P0174 2017 GMC Sierra
Click Here to Learn What is Bank 1 and Bank 2
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