P2523

A/C Request B 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
Reduced cooling efficiency
Check Engine Light Is On
Unstable operation of the climate control system

Causes

Open or short circuit in the circuit
Poor contact in the connector
Malfunction of the climate control unit
Air conditioning relay problems
Refrigerant pressure sensor malfunction

How to Fix

Check the integrity of the wires in the request circuit
Inspect and clean the contacts in the connectors
Check the operation of the air conditioner relay
Test the climate control unit
Check refrigerant pressure sensor

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