P2523 OBD-II: A/C Request "B" Circuit Low

P2523 Severity

Moderate

Will P2523 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.

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P2523 Summary Find a Repair Shop P2523 Details Ask RepairPal CarGenius Other OBD-II Codes

What causes OBD-II fault code P2523?

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 P2523 will be stored.

OBD II Fault Code

OBD II P2523

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

A/C may not operate Symptoms

A/C may not operate

Common Problems That Trigger the P2523 Code

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

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Other OBD-II Codes

P2522: A/C Request "B" Circuit P2521: A/C Request "A" Circuit High P2520: A/C Request "A" Circuit Low P251F: PTO Engine Shutdown Circuit High P251E: PTO Engine Shutdown Circuit Low P251D: PTO Engine Shutdown Circuit/Open P251C: PTO Enable Switch Circuit High P251B: PTO Enable Switch Circuit Low P251A: PTO Enable Switch Circuit/Open P2519: A/C Request "A" Circuit P2518: A/C Refrigerant Pressure Sensor "B" Circuit High P2517: A/C Refrigerant Pressure Sensor "B" Circuit Low P2524: A/C Request "B" Circuit High P2525: Vacuum Reservoir Pressure Sensor Circuit P2526: Vacuum Reservoir Pressure Sensor Circuit Range/Performance P2527: Vacuum Reservoir Pressure Sensor Circuit Low P2528: Vacuum Reservoir Pressure Sensor Circuit High P2529: Vacuum Reservoir Pressure Sensor Circuit Intermittent P252A: Engine Oil Quality Sensor Circuit P252B: Engine Oil Quality Sensor Circuit Range/Performance P252C: Engine Oil Quality Sensor Circuit Low P252D: Engine Oil Quality Sensor Circuit High P252E: Engine Oil Quality Circuit Intermittent/Erratic P252F: Engine Oil Level Too High

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