Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means that the car's computer is not getting a strong enough signal from the air conditioning request circuit. It's like when you press a button and nothing happens because the button isn't working right.
The vehicle's computer monitors the A/C request circuit to ensure it is functioning correctly. If the signal is too low, it triggers this code.
The P2523 code indicates that the Powertrain Control Module (PCM) has detected a low voltage condition in the A/C Request B Circuit. This circuit is responsible for sending a signal to the PCM when the air conditioning system is activated.
• Air conditioning not working
• Check engine light illuminated
• Inconsistent A/C performance
• Faulty A/C request switch
• Damaged wiring or connectors in the A/C request circuit
• Faulty PCM
PCM: Powertrain Control Module
A/C: Air Conditioning
• Inspect the A/C request switch for damage.
• Check wiring and connectors for corrosion or damage.
• Test the voltage at the A/C request circuit.
• Replace the A/C request switch if faulty.
• Repair or replace damaged wiring or connectors.
• Reprogram or replace the PCM if necessary.
• Multimeter
• OBD-II scanner
• Basic hand tools
$100 - $500
Moderate
• Ford F-150
• Chevrolet Silverado
• Toyota Camry
• Regularly inspect A/C system components.
• Ensure wiring and connectors are free from corrosion.
• Perform routine A/C system maintenance.
Sensor Issue
• Have a professional diagnose the issue.
• Avoid using the A/C until the problem is fixed.
Check with your vehicle's manufacturer for warranty coverage on electrical components.
This code has been associated with issues in vehicles where the A/C system is heavily used or in older models with worn-out components.
Moderate – While the vehicle can still be driven, the A/C system may not function properly, which can be uncomfortable in hot weather.
Driving with a malfunctioning A/C system is not a safety issue, but it can affect comfort and visibility if the defogger is not working properly.
• Engine running
• A/C system activated
The A/C request switch is typically located on the dashboard or control panel of the vehicle.
Q: Can I drive my car with this code?
A: Yes, but the air conditioning system may not work properly.
Q: Will this code affect my car's performance?
A: No, it primarily affects the air conditioning system.
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