P0174 2014 GMC Sierra Code - Fuel Trim System Lean Bank 2
Quick Answer
The P0174 code for a 2014 GMC Sierra indicates a Fuel Trim System Lean Bank 2. Common causes include Vacuum leak, 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 2014 GMC Sierra indicates Fuel Trim System Lean Bank 2.
- Common causes
- Common causes include Vacuum leak, 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 2014 GMC Sierra Description
The P0174 code for a 2014 GMC Sierra indicates a Fuel Trim System Lean Bank 2. 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 ensure optimal combustion and engine performance. When the system is lean, it means there is too much air and not enough fuel in the mixture.
Common Causes of P0174 2014 GMC Sierra
- Vacuum leak
- Faulty oxygen sensor
- Clogged fuel filter
- Malfunctioning fuel injector
- Issue with the mass airflow sensor
Symptoms of P0174 2014 GMC Sierra
- Rough idle
- Engine misfires
- Decreased fuel efficiency
- Engine stalling
- Difficulty starting the engine
How to Fix P0174 2014 GMC Sierra
- Perform a visual inspection of the vacuum lines and intake system to check for any leaks. Repair or replace any damaged components.
- Test the oxygen sensor using a multimeter to ensure it is functioning properly. Replace if necessary.
- Replace the fuel filter to ensure proper fuel flow to the engine.
- Clean or replace the fuel injector on bank 2 to address any issues with fuel delivery.
- Test the mass airflow sensor and replace if it is not functioning correctly.
Cost to Fix P0174 2014 GMC Sierra
The typical repair costs for addressing a P0174 code on a 2014 GMC Sierra can range from $200 to $800, depending on the specific cause of the issue and the cost of parts and labor. It's important to note that diagnosis time and labor rates at auto repair shops can vary, so it's advisable to check with local shops for a more accurate estimate. Labor rates typically range from $80 to $150 per hour, but rates may be higher at dealerships or in metropolitan areas. Independent shops may offer lower rates for repairs.
Tech Notes for P0174 2014 GMC Sierra
Click Here to Learn What is Bank 1 and Bank 2
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