Cadillac P1539: Air Conditioning Clutch Status High Input

Is your scanner showing Cadillac P1539?
No worries. We'll show you what it means and how to deal with it.

Presented by
Randy Worner

Cadillac P1539: Air Conditioning Clutch Status High Input

OVERVIEW
Severity
:
Medium
DIY Difficulty Level
:
Intermediate
Repair Cost
:
$100-$200
Can I Still Drive?
:
Yes

What Does The Cadillac P1539 Code Mean?

Engine started; A/C Clutch relay disengaged, and the PCM detected the A/C status (voltage) was high for 5 seconds.

What Are The Potential Causes Of The Cadillac P1539 Code?

  • A/C clutch status circuit is shorted to system power (B+)
  • A/C clutch relay is damaged or has failed (contacts are stuck)
  • PCM has failed

Recommended Parts

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

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

Reference Sources

GM, 2013, Service Bullettin – Prior To Any Circuit Testing.

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