how to troubleshoot Skoda Octavia NFL (2020-Present) with P0171 lean code

• •Check engine light illuminated
• •Rough idle or stalling
• •Decreased engine power
• •Poor fuel economy
• •Increased emissions

1. 1Scan the vehicle using an OBD-II scanner to confirm the P0171 code and check for any additional codes.
2. 2Inspect the air intake system for any leaks or damage, including hoses and the intake manifold.
3. 3Check the fuel system, including fuel pressure, fuel filter condition, and fuel injectors for proper operation.
4. 4Inspect the mass air flow (MAF) sensor for dirt or damage and ensure it is functioning correctly.
5. 5Examine the oxygen sensors for proper operation and check their readings with a scan tool.
6. 6Verify the engine coolant temperature (ECT) sensor readings to ensure they are within spec.
7. 7Inspect the vacuum lines for leaks that could affect the air-fuel ratio.

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
• •Multimeter
• •Fuel pressure gauge
• •Socket set
• •MAF sensor cleaner
• •Oxygen sensor socket

• •New air filter
• •New fuel filter
• •New MAF sensor (if necessary)
• •New oxygen sensor (if necessary)