Engine-CodesBuick – P1654 Buick

P1654 Buick Code - A/C Relay Control Circuit Conditions

Quick Answer

The P1654 Buick code refers to a problem in the A/C relay control circuit conditions. Common causes include Faulty A/C relay, Damaged wiring or connectors in the A/C relay control circuit, Malfunctioning A/C control module. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means
P1654 Buick indicates A/C Relay Control Circuit Conditions.
Common causes
Common causes include Faulty A/C relay, Damaged wiring or connectors in the A/C relay control circuit, Malfunctioning A/C control module.
Severity
High - diagnose this code as soon as possible.
Can I drive?
Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
Table of contents Created and updated by William Orellana on Sep 10, 2024
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Code P1654 Buick Description

The P1654 Buick code refers to a problem in the A/C relay control circuit conditions. This means that there is an issue with the circuit that controls the A/C relay, which is responsible for turning the air conditioning compressor on and off. The A/C relay control circuit is an essential component of the vehicle's air conditioning system, as it regulates the flow of power to the compressor based on the signals it receives from the A/C control module.

OBDII Code P1654 Buick - A/C Relay Control Circuit Conditions
P1654 Buick Code - A/C Relay Control Circuit Conditions

Common Causes of P1654 Buick

  1. Faulty A/C relay
  2. Damaged wiring or connectors in the A/C relay control circuit
  3. Malfunctioning A/C control module
  4. Electrical issues in the A/C system
  5. Corrosion or rust in the A/C relay control circuit components

Symptoms of P1654 Buick

  1. Lack of cold air coming from the A/C system
  2. A/C system not turning on at all
  3. Inconsistent cooling performance
  4. A/C system turning on and off intermittently
  5. Illumination of the A/C warning light on the dashboard

How to Fix P1654 Buick

  1. Begin by diagnosing the root cause of the issue using a diagnostic scanner to pinpoint the exact problem in the A/C relay control circuit.
  2. Inspect the A/C relay, wiring, and connectors for any visible damage or corrosion. Replace any faulty components.
  3. Test the A/C relay control circuit to ensure proper voltage and continuity.
  4. Reset the A/C system and clear the diagnostic trouble codes using the diagnostic scanner.
  5. Test the A/C system to verify that the issue has been resolved and that the A/C is functioning correctly.

Cost to Fix P1654 Buick

The cost of repairing the P1654 Buick code related to the A/C relay control circuit conditions can vary depending on the extent of the issue and the specific components that need to be replaced. On average, the repair costs for this type of issue can range from $150 to $500, including parts and labor. However, it is important to note that the actual costs may differ based on the location of the repair shop, the vehicle's make and model, and the type of engine. Additionally, the diagnosis time and labor rates at auto repair shops can vary, with hourly rates typically ranging between $80 and $150. It is recommended to obtain quotes from multiple auto repair shops to get a more accurate estimate for the repair.

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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.

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