Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means there's a problem with the part of the car's air conditioning system that sends a signal to turn the A/C on or off. It's like when a light switch doesn't work properly.
The A/C Request B Circuit is responsible for sending a signal from the A/C control module to the engine control module (ECM) to request air conditioning operation.
The P2522 code indicates that the ECM has detected a malfunction in the A/C Request B Circuit. This circuit is used to communicate the need for air conditioning operation from the climate control system to the engine management system. A fault in this circuit can prevent the A/C from operating correctly.
• Air conditioning not functioning
• A/C system not engaging
• Check Engine Light illuminated
• Faulty A/C request switch
• Damaged wiring or connectors in the A/C request circuit
• Faulty ECM or A/C control module
ECM: Engine Control Module
A/C: Air Conditioning
• Inspect the A/C request switch for damage or wear.
• Check the wiring and connectors in the A/C request circuit for continuity and damage.
• Test the ECM and A/C control module for faults.
• Replace the faulty A/C request switch.
• Repair or replace damaged wiring or connectors.
• Replace the faulty ECM or A/C control module if necessary.
• OBD-II scanner
• Multimeter
• Basic hand tools
$100 - $500
Moderate
• Ford F-150
• Chevrolet Silverado
• Toyota Camry
• Regularly inspect A/C system components.
• Ensure wiring and connectors are secure and undamaged.
• Perform routine maintenance on the vehicle's electrical system.
Sensor Issue
• If the A/C is not working, check for this code.
• Consult a professional mechanic if unsure about repairs.
Check if the vehicle's warranty covers electrical system repairs.
This code has been associated with issues in vehicles with complex climate control systems, particularly in models with advanced ECMs.
Moderate – While not critical, it can affect comfort and vehicle performance.
Operating a vehicle without a functioning A/C system can lead to discomfort and potential safety issues in extreme temperatures.
• Vehicle engine running
• A/C system activated
The A/C request switch is typically located on the dashboard or climate control panel.
Q: Can I drive with a P2522 code?
A: Yes, but your A/C system may not work properly, which can be uncomfortable in hot weather.
Q: Will the P2522 code affect my engine?
A: It primarily affects the A/C system, but it can indirectly affect engine performance if the ECM cannot manage engine load properly.
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