FAULTBASE
Error CodesASKCars
© 2026 FAULTBASE
All rights reserved.
v2.0.0 • Production
ContactPrivacyImpressum
how to troubleshoot a non-working fuel pump in Tesla Outback 5th Generation (2015-2019) - Subaru Outback
Home/Cars/Subaru/Outback/5th Generation (2015-2019)/how to troubleshoot a non-working fuel pump in Tesla Outback 5th Generation (2015-2019)

how to troubleshoot a non-working fuel pump in Tesla Outback 5th Generation (2015-2019)

Subaru Outback 5th Generation (2015-2019)

Error Codes
2-4 hours
Time
medium
Difficulty
high
Severity
Navigation
ProblemSymptomsDiagnosisSolution
ProblemSymptomsDiagnosisSolution
4 min read
608 words

⚠️ Safety Warning

This issue requires immediate attention. If you are not experienced with automotive repairs, consult a professional mechanic. Working on critical systems can be dangerous.

Problem Statement

Learn how to troubleshoot and fix a non-working fuel pump in a 2015-2019 Subaru Outback. Step-by-step guide with diagnostic procedures and repair instructions.

Affected Component
Fuel System
Estimated Time
2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

  • •Disconnect the battery before working on electrical systems.
  • •Allow the fuel system to depressurize before servicing to avoid fuel spray.

Symptoms

  • •Engine cranks but does not start
  • •No fuel pressure at the fuel rail
  • •Fuel pump noise is absent when the ignition is turned on
  • •Fuel gauge may show incorrect readings
  • •Check engine light illuminated

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
  • •Multimeter
  • •Fuel pressure gauge
  • •Socket set
  • •Torque wrench

Parts Required

  • •Fuel pump (if replacement is necessary)
  • •Fuel filter (if applicable)

Additional Information

Affected Component
Fuel System
Estimated Time
2-4 hours
Difficulty
medium
Severity
high
Tools Required
5 items
Parts Required
2 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: OBD-II scanner, multimeter, fuel pressure gauge, socket set, torque wrench.
  • Disconnect the vehicle battery to prevent electrical shock.
2. Inspect Fuse and Relay
  • Locate the fuel pump fuse in the fuse box (refer to the owner’s manual for the exact location).
  • Remove the fuse and check for continuity using a multimeter. Replace if blown.
  • Locate the fuel pump relay, pull it out, and perform a continuity test. Replace if defective.
3. Test Power to Fuel Pump
  • Reconnect the battery and turn the ignition to the ON position (do not start the engine).
  • Use a multimeter to check for voltage at the fuel pump connector. You should see around 12 volts.
  • If there is no voltage, check the wiring harness for damage and inspect the ignition switch.
4. Check Fuel Pressure
  • Connect a fuel pressure gauge to the fuel rail’s service port.
  • Turn the ignition to the ON position to prime the system. Note the pressure reading.
  • If the pressure is below specifications (refer to service manual for exact values), the fuel pump may need replacement.
5. Inspect Fuel Lines
  • Visually inspect the fuel lines for any signs of leaks or blockages.
  • If blockages are found, replace the affected fuel line.
6. Verify Ground Connection
  • Check the ground connection for the fuel pump at the chassis or fuel pump assembly.
  • Clean any corrosion and ensure a tight connection.
7. Replace Fuel Pump (if necessary)
  • If all previous tests indicate a faulty fuel pump, proceed with replacement.
  • Remove the rear seat or access panel to reach the fuel pump assembly.
  • Disconnect the fuel lines and electrical connectors. Remove the retaining ring and lift the fuel pump assembly out.
  • Install the new fuel pump, ensuring all seals are intact and reassemble in reverse order.