P2520 OBD-II: A/C Request "A" Circuit Low

P2520 Severity

Moderate

Will P2520 go away on its own?

Once the vehicle's onboard system no longer detects the issue, most codes will disappear on their own. If your vehicle still has this code, however, it should be properly diagnosed to avoid a more serious problem.

For a proper diagnosis, RepairPal Certified shops have the equipment, tools, and expertise.

Moderate severity codes might not threaten the vehicle's safety or functionality immediately, but you should still get it diagnosed within a reasonable time frame to keep your car running well.

Schedule Diagnosis

P2520 Summary Find a Repair Shop P2520 Details Ask RepairPal CarGenius Other OBD-II Codes

What causes OBD-II fault code P2520?

When the driver requests the A/C to be turned on, a signal goes from the switch to the engine computer (PCM). The PCM then sends power to the A/C Compressor to turn it on. If the Compressor fails to turn on, code P2520 will be stored.

OBD II Fault Code

OBD II P2520

OBD-II Code A/C may not operate is defined as a A/C Request "A" Circuit Low

A/C may not operate Symptoms

A/C may not operate

Common Problems That Trigger the P2520 Code

A/C compressor failure
A/C compressor relay failure
Powertrain Control Module (PCM) failure
Wiring issue

OBD Code Resources

Exceptional warranty

Shops offer at least a 12-month or 12,000-mile warranty.

Satisfied customers

We ensure high satisfaction through verified customer reviews.

Transparent pricing

You'll get a Fair Price Guarantee on all RepairPal estimates.

Millions trust us for auto repair — RepairPal Certified^® locations must pass a rigorous approval process to ensure quality, customer satisfaction, and fair pricing.

OBD II Fault Code

OBD II P2520

OBD-II Code A/C may not operate is defined as a A/C Request "A" Circuit Low

A/C may not operate Symptoms

A/C may not operate

Common Problems That Trigger the P2520 Code

A/C compressor failure
A/C compressor relay failure
Powertrain Control Module (PCM) failure
Wiring issue

P2520 OBD-II: A/C Request "A" Circuit Low

Will P2520 go away on its own?

What causes OBD-II fault code P2520?

Need a P2520 diagnosis? Trust our experts.

OBD II Fault Code

A/C may not operate Symptoms

Common Problems That Trigger the P2520 Code

OBD Code Resources

Ask our experts about P2520.

Other OBD-II Codes

OBD II Fault Code

A/C may not operate Symptoms

Common Problems That Trigger the P2520 Code