P0174 2018 Chevrolet Silverado Code - Fuel Trim System Lean Bank 2
Quick Answer
The P0174 code for a 2018 Chevrolet Silverado indicates a Fuel Trim System Lean condition on Bank 2. Common causes include Vacuum leaks in the intake manifold or vacuum hoses, Faulty mass airflow 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 2018 Chevrolet Silverado indicates Fuel Trim System Lean Bank 2.
- Common causes
- Common causes include Vacuum leaks in the intake manifold or vacuum hoses, Faulty mass airflow 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 2018 Chevrolet Silverado Description
The P0174 code for a 2018 Chevrolet Silverado indicates a Fuel Trim System Lean condition on 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 fuel trim system indicates a lean condition, it means that there is an excessive amount of air compared to fuel in the combustion process.
Common Causes of P0174 2018 Chevrolet Silverado
- Vacuum leaks in the intake manifold or vacuum hoses
- Faulty mass airflow sensor
- Clogged fuel filter
- Malfunctioning oxygen sensor
- Issues with fuel injectors
Symptoms of P0174 2018 Chevrolet Silverado
- Decreased engine power
- Rough idling or stalling
- Hesitation or stumbling during acceleration
- Increased fuel consumption
- Engine misfires
How to Fix P0174 2018 Chevrolet Silverado
- Perform a thorough inspection of the intake manifold and vacuum hoses to check for any leaks. Repair or replace any damaged components.
- Test the mass airflow sensor to ensure it is functioning correctly. Clean or replace the sensor if necessary.
- Replace the fuel filter to ensure proper fuel flow to the engine.
- Check the oxygen sensor for proper operation and replace if needed.
- Inspect the fuel injectors for clogs or malfunctions. Clean or replace the injectors as required.
Cost to Fix P0174 2018 Chevrolet Silverado
The typical repair costs for addressing a P0174 code on a 2018 Chevrolet Silverado can vary depending on the underlying cause of the lean fuel mixture. In general, the cost of parts such as a new mass airflow sensor, fuel filter, oxygen sensor, or fuel injectors can range from $50 to $500 each, depending on the specific component and brand. Labor costs for diagnosing and repairing the issue can range from $200 to $500, based on the shop's hourly rates and the complexity of the repair. It's recommended to consult with a trusted mechanic or auto repair shop to get an accurate estimate based on your vehicle's specific needs and location.
Tech Notes for P0174 2018 Chevrolet Silverado
Click Here to Learn What is Bank 1 and Bank 2
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