Error code
OBD2 P2520
OBD2P2520
Diagnostic Trouble Code· Standard OBD-II fault code read from the vehicle's onboard diagnostics.
What it means
A/C Request 'A' Circuit Low.
Severity
moderateCan drive, but the air conditioning may not work properly.
Summary
P2520 indicates that there is an issue with the A/C Request 'A' circuit being too low, which could be related to wiring or components in the air conditioning system.
Common Causes
- Wiring short to ground
- AJC control module failure
- AJC master switch malfunction
- AJC refrigerant pressure switch/sensor issue
Fixes
FAQ
What does P2520 mean?
P2520 indicates a low signal in the A/C Request 'A' circuit, which is part of the air conditioning system.
How do I fix it?
The issue could be due to wiring problems or faulty components like the AJC control module, master switch, or refrigerant pressure sensor. Professional diagnosis and repair are recommended.
Not affiliated with OBD2. Answer summarized from the manufacturer's manual linked above; consult that source for the authoritative procedure.
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