Subaru P1520: Cooling Fan Relay 1 Circuit High Input

Is your scanner showing Subaru P1520?
No worries. We'll show you what it means and how to deal with it.

Presented by
Randy Worner

Subaru P1520: Cooling Fan Relay 1 Circuit High Input

OVERVIEW
Severity
:
Medium
DIY Difficulty Level
:
Intermediate
Repair Cost
:
$100-$300
Can I Still Drive?
:
Yes (Short-term only)

What Does The Subaru P1520 Code Mean?

Key on or engine running; and the PCM detected an unexpected “high” voltage condition on the Radiator Fan Relay 1 circuit during the CCM test.

What Are The Potential Causes Of The Subaru P1520 Code?

  • Check output signal of ECM
  • Check for short circuit in radiator fan relay control circuit
  • Check main fan relay
  • Check sub fan relay
  • Check poor contact

Recommended Parts

Below are some recommended auto parts to help you address the trouble code affecting your vehicle and get it running smoothly again:

>>> WORKPRO 582-piece Crimp Terminals, Wire Connectors, Heat Shrink Tube, Electrical Repair Kit
>>> Twippo 372Pcs Waterproof Wire Connectors Kit

Note: During the purchasing process, please check carefully whether the part you want to buy fits your car!

Reference Sources

Subaru Impreza Repair Manual for P1520 – Pages 652-655.

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