P0174 2016 Chevrolet Silverado Code - Fuel Trim System Lean Bank 2
Quick Answer
The Engine Control Module (ECM) controls a Closed Loop air/fuel metering system to provide the best possible combination of drivability, fuel economy, and emission control. Common causes include Dirty or Restricted Air Filter, Dirty or Faulty Mass Air Flow (MAF) Sensor, Intake Air Leaks. 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 2016 Chevrolet Silverado indicates Fuel Trim System Lean Bank 2.
- Common causes
- Common causes include Dirty or Restricted Air Filter, Dirty or Faulty Mass Air Flow (MAF) Sensor, Intake Air Leaks.
- 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.
Code P0174 2016 Chevrolet Silverado Description
What are the Possible Causes of the DTC P0174 2016 Chevrolet Silverado?
- Dirty or Restricted Air Filter
- Dirty or Faulty Mass Air Flow (MAF) Sensor
- Intake Air Leaks
- Exhaust Gas Leaks
- Fuel Contamination
- Faulty or Clogged Fuel Injectors
- Faulty Front Heated Oxygen Sensor
- Ignition Misfiring
- Low Fuel Pressure
- Positive Crankcase Ventilation (PCV) Hose Leaks
How to Fix the DTC P0174 2016 Chevrolet Silverado?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
Code Tech Notes
Click Here to Learn What is Bank 1 and Bank 2
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P0174 2016 Chevrolet Silverado code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
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Frequently Asked Questions about P0174 2016 Chevrolet Silverado Code
What does OBD-II code P0174 mean for a 2016 Chevrolet Silverado?
P0174 indicates that the engine's fuel mixture is too lean (not enough fuel) on Bank 2, which typically refers to the side of the engine opposite to Bank 1.
What are the common symptoms of code P0174 in a 2016 Chevrolet Silverado?
Symptoms may include engine misfires, rough idle, reduced fuel economy, hesitation during acceleration, and the Check Engine Light being illuminated.
What causes code P0174 in a 2016 Chevrolet Silverado?
Common causes include vacuum leaks, a faulty mass airflow (MAF) sensor, dirty or clogged fuel injectors, exhaust leaks, or a failing oxygen sensor.
Can a dirty air filter trigger code P0174 in a 2016 Chevrolet Silverado?
Yes, a dirty or clogged air filter can disrupt airflow and cause a lean fuel mixture, potentially triggering P0174.
How do I diagnose code P0174 on a 2016 Chevrolet Silverado?
Start by inspecting for vacuum leaks, checking the MAF sensor for dirt or damage, testing the oxygen sensors, and examining the fuel injectors for clogs or malfunction.
Can driving with code P0174 damage my 2016 Chevrolet Silverado?
Driving with this code for an extended period can cause engine damage, increased wear on components, and poor performance due to improper air-fuel ratios.
How can I fix code P0174 on a 2016 Chevrolet Silverado?
Possible fixes include repairing vacuum leaks, cleaning or replacing the MAF sensor, replacing faulty oxygen sensors, cleaning fuel injectors, or addressing exhaust leaks.
Is code P0174 specific to Bank 2 on a 2016 Chevrolet Silverado?
Yes, P0174 pertains to Bank 2, which is the side of the engine opposite Bank 1. This code indicates a lean condition specifically on that side.
Can bad fuel quality cause code P0174 in a 2016 Chevrolet Silverado?
Poor-quality or contaminated fuel can disrupt proper combustion and contribute to a lean condition, potentially causing P0174.
Should I replace the MAF sensor if I get code P0174 on my 2016 Chevrolet Silverado?
Not necessarily. First, clean the MAF sensor and check for damage. If cleaning doesn't resolve the issue, it may need to be replaced.
Discuss the causes and fixes for P0174 2016 Chevrolet Silverado OBDII Code
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