P2520 - OBD II Trouble Code

Our automotive experts have put together the following information about the P2520 diagnostic trouble code. We've provided the common symptoms that occur when this code is set along with the frequent repairs that address the issues related to the P2520 code.

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

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.

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