AutoCodes – Chevrolet – P1546 Chevrolet

P1546 Chevrolet Code - A/C Clutch Status Circuit Low Voltage

Quick Answer

The Powertrain Control Module (PCM) will activate the A/C clutch relay when the PCM detects that A/C has been requested. Common causes include Faulty A/C Clutch Relay, A/C Clutch Relay harness is open or shorted, A/C Clutch Relay circuit poor electrical connection. Severity is Low - monitor the vehicle and repair when practical. The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.

What it means
P1546 Chevrolet indicates A/C Clutch Status Circuit Low Voltage.
Common causes
Common causes include Faulty A/C Clutch Relay, A/C Clutch Relay harness is open or shorted, A/C Clutch Relay circuit poor electrical connection.
Severity
Low - monitor the vehicle and repair when practical.
Can I drive?
The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.
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Code Popularity 11,769
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Aug 29, 2019
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Code P1546 Chevrolet Description

The Powertrain Control Module (PCM) will activate the A/C clutch relay when the PCM detects that A/C has been requested. When the PCM activates the relay, the voltage should be present at both the A/C compressor clutch and the A/C clutch status circuit at the PCM.
OBDII Code P1546 Chevrolet - A/C Clutch Status Circuit Low Voltage - AutoCodes.com
P1546 Chevrolet Code - A/C Clutch Status Circuit Low Voltage

What are the Possible Causes of the DTC P1546 Chevrolet?

  • Faulty A/C Clutch Relay
  • A/C Clutch Relay harness is open or shorted
  • A/C Clutch Relay circuit poor electrical connection

How to Fix the DTC P1546 Chevrolet?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P1546 Chevrolet code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the P1546 Chevrolet code?

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Need Help with the Code?

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P1546 Chevrolet Code

No Frequently Asked Questions about P1546 Chevrolet Code found.

Discuss the causes and fixes for P1546 Chevrolet OBDII Code

  • p1546 2002 impala,, had a passcode problem, it was the contacts at the end of the ignition switch,, took it apart and sanded the contacts ,, no more passcode problem,,i put dielectric grease on contacts,, a/c worked for a wile then quit, no power to the fuses, no blower motor, no power to switch.. hooked up scanner got P1546 code,, took the ignition switch back a part and cleaned contacts .. a/c works fine,, so P1546 code fix is ignition switch

  • Interesting information. Thank you for sharing!!

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