P2520

A/C Request A Circuit Low

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$6–56 (est.)

Symptoms

Air conditioner won't turn on
Intermittent operation of the air conditioner
Check Engine Light Is On
Reduced cooling efficiency
Increased fuel consumption

Causes

Open or short circuit in the circuit
Air conditioner switch malfunction
Air conditioning relay problems
Control unit malfunction
Contact corrosion

How to Fix

Check the integrity of the wiring in the request circuit
Check the operation of the air conditioner switch button
Diagnose the air conditioner relay
Check contacts for corrosion
Scan the control unit for errors

Related codes

P0532 P0533 P0530