FAULTBASE
Error CodesASKCars
© 2026 FAULTBASE
All rights reserved.
v2.0.0 • Production
ContactPrivacyImpressum
how to fix P0171 code on Honda Civic 10th Generation (2016-2021) - Honda Civic
Home/Cars/Honda/Civic/11th Generation (2022-Present)/how to fix P0171 code on Honda Civic 10th Generation (2016-2021)

how to fix P0171 code on Honda Civic 10th Generation (2016-2021)

Honda Civic 11th Generation (2022-Present)

Error Codes
2-4 hours
Time
medium
Difficulty
medium
Severity
Error Code: P0171
Navigation
ProblemSymptomsDiagnosisSolution
ProblemSymptomsDiagnosisSolution
4 min read
602 words

Problem Statement

Learn how to diagnose and fix P0171 engine lean condition in Honda Civic 10th Generation. Step-by-step guide with diagnostic procedures and repair instructions.

Error Code
P0171
Affected Component
Engine
Estimated Time
2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

  • •Disconnect the battery before working on electrical systems.
  • •Allow engine to cool before opening the air intake system.
  • •Be cautious when working with fuel systems to prevent fire hazards.

Symptoms

  • •Check engine light illuminated
  • •Rough idle or stalling
  • •Loss of power during acceleration
  • •Poor fuel economy
  • •Increased emissions

Diagnostic Steps

  1. 1
  2. 2
  3. 3
  4. 4
  5. 5
  6. 6

Solution

💡 Expert Tip

For complex repairs like this, consider taking photos at each step. This helps if you need to reverse a step or consult with a mechanic. Also, keep all removed parts organized - you may need to reference them during reassembly.

Verification

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

Prevention Tips

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

Tools & Equipment Required

  • •OBD-II scanner
  • •Socket set
  • •Torx screwdriver
  • •Fuel pressure gauge
  • •MAF sensor cleaner
  • •Multimeter

Parts Required

  • •Air filter
  • •MAF sensor cleaner
  • •Fuel filter (if necessary)
  • •Vacuum lines (if damaged)
  • •Fuel injectors (if faulty)

Additional Information

Error Code
P0171
Affected Component
Engine
Estimated Time
2-4 hours
Difficulty
medium
Severity
medium
Tools Required
6 items
Parts Required
5 items

Related Faults

Loading...

Share this solution

Comments

Sign in to share your thoughts

Sign In

No comments yet

Be the first to share your thoughts

Back to Generation
Solution
1. Preparation
  • Gather tools and parts required.
  • Disconnect the negative battery terminal to prevent electrical shorts.
  • Allow the engine to cool down before starting work.
2. Inspect and Repair Air Intake System
  • Sub-steps:
    • Remove the air intake duct to access the throttle body.
    • Check for any cracks or loose connections in the duct.
    • Inspect the air filter; replace it if dirty.
    • Reinstall the intake duct securely.
3. Clean or Replace MAF Sensor
  • Sub-steps:
    • Locate the MAF sensor in the air intake path.
    • Disconnect the electrical connector from the MAF sensor.
    • Remove the MAF sensor using a Torx screwdriver.
    • Clean the sensor with MAF cleaner spray; do not touch the sensor element.
    • Reinstall the MAF sensor and reconnect the electrical connector.
4. Inspect Vacuum Lines
  • Sub-steps:
    • Follow the vacuum lines from the intake manifold to the various components.
    • Look for any signs of wear, cracks, or disconnections.
    • Replace any damaged vacuum lines with new ones.
5. Test and Repair Fuel System
  • Sub-steps:
    • Connect a fuel pressure gauge to the fuel rail.
    • Turn the ignition to the ON position (engine off) to check the fuel pressure.
    • Compare the reading with the manufacturer’s specifications (typically around 40-50 psi).
    • If the pressure is low, inspect the fuel pump and fuel filter for issues.
    • Replace the fuel filter if necessary.
6. Check Fuel Injectors
  • Sub-steps:
    • Remove the fuel injector rail to access the injectors.
    • Inspect the injectors for dirt or clogs; clean them if needed.
    • Test the injectors using a multimeter to ensure they are within specifications.
    • Replace any faulty injectors.