my Ford F-150 has a check engine light and the code is P0171 what does that mean

• •Check engine light illuminated
• •Engine may experience rough idle
• •Loss of power during acceleration
• •Poor fuel economy
• •Increased emissions
• •Possible engine stalling during idle

1. 1Scan for additional error codes using an OBD-II scanner to confirm P0171 and identify any related codes.
2. 2Inspect the air intake system for leaks or cracks, including the intake manifold and vacuum hoses.
3. 3Check the fuel system pressure using a fuel pressure gauge to ensure adequate fuel delivery.
4. 4Inspect the mass airflow (MAF) sensor for dirt or damage and clean or replace it as necessary.
5. 5Verify the operation of the fuel injectors by listening for their click sound or using an ultrasonic cleaner to inspect for blockages.
6. 6Examine the oxygen sensors for proper function and any signs of wear or failure.

After completing the repair, verify that the issue has been resolved:

• ✓Test the affected component to ensure it functions correctly
• ✓Check for any error codes or warning lights
• ✓Monitor the vehicle for a few days to ensure the issue does not recur

To prevent this issue from occurring again:

• •Follow the manufacturer's recommended maintenance schedule
• •Address warning signs early before they develop into major issues
• •Use quality parts and fluids recommended for your vehicle
• •Keep detailed records of all repairs and maintenance

• •OBD-II scanner
• •Fuel pressure gauge
• •Socket set
• •Screwdrivers
• •MAF sensor cleaner
• •O2 sensor socket

• •Intake manifold gasket (if needed)
• •Fuel filter (if needed)
• •MAF sensor (if needed)
• •Oxygen sensor (if needed)