Subaru Error Code P1560: How to Fix It

Medium 45-90 minutes Medium Severity Verified June 2026
Error Code
P1560
Brand
Subaru
Product Type
automotive
Severity
Medium
DIY Difficulty
Medium
Estimated Fix Time
45-90 minutes
Subaru error code P1560 indicates a backup voltage circuit malfunction in your vehicle's electrical system. This error typically affects the engine control module's ability to maintain power during ignition transitions, which can cause starting issues or engine performance problems.
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Tools You'll Need

How to Fix Error Code P1560

  1. Scan for Additional Codes

    Ensure the vehicle is parked safely with the parking brake engaged before connecting diagnostic equipment.
  2. Check Battery Voltage

    Avoid touching battery terminals with bare hands and ensure the multimeter is set to DC voltage before testing.
  3. Inspect Battery Connections

    Always disconnect the negative terminal first and reconnect it last to prevent electrical shorts.
  4. Test Alternator Output

    Be careful around moving engine parts and hot surfaces when testing with the engine running.
  5. Check Backup Fuses

  6. Inspect ECM Power Supply Wiring

    Do not disconnect ECM connectors unless absolutely necessary, as this may cause additional error codes.
  7. Clear Codes and Test Drive

Parts You May Need

Automotive fuses
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Battery terminal cleaner
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Battery terminals
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Automotive fuses
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Battery terminal cleaner
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Battery terminals
Check Price on Amazon
Automotive fuses
Check Price on Amazon
Battery terminal cleaner
Check Price on Amazon
Battery terminals
Check Price on Amazon
Automotive fuses
Check Price on Amazon
Battery terminal cleaner
Check Price on Amazon
Battery terminals
Check Price on Amazon
Automotive fuses
Check Price on Amazon
Battery terminal cleaner
Check Price on Amazon
Battery terminals
Check Price on Amazon
Automotive fuses
Check Price on Amazon
Battery terminal cleaner
Check Price on Amazon
Battery terminals
Check Price on Amazon
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When to Call a Professional

Contact a qualified Subaru technician if the error code persists after checking battery, alternator, and fuses, or if you're uncomfortable working with electrical systems. Professional diagnosis may be needed if the ECM itself is faulty or if there are complex wiring issues requiring specialized equipment.

Frequently Asked Questions

Can I drive my Subaru with error code P1560?
You can typically drive short distances with P1560, but the vehicle may experience starting difficulties or reduced performance. It's best to diagnose and fix the issue promptly to avoid potential breakdown.
Will P1560 cause my Subaru to fail emissions testing?
Yes, P1560 will likely cause your vehicle to fail emissions testing since it's a stored error code. The code must be cleared and the issue resolved before testing.
How much does it cost to fix Subaru error code P1560?
Repair costs vary depending on the root cause. Simple fixes like battery terminal cleaning cost under $20, while alternator replacement can cost $300-600. ECM replacement is more expensive at $800-1500.
Is P1560 common in certain Subaru models?
P1560 can occur in various Subaru models but is more commonly reported in older vehicles (2005-2015) due to aging electrical components and battery connections.
What causes backup voltage circuit malfunctions in Subarus?
Common causes include weak battery, corroded terminals, failing alternator, blown fuses, damaged wiring, or rarely, a faulty ECM. Environmental factors like extreme temperatures can also contribute to the issue.