P2515 to P2524, P2561 and P2611 to P2613: air conditioning pressure sensor B, requests and distribution valve
The second A/C refrigerant pressure sensor (B) has a fault, the A/C request signal A or B from the climate control is wrong, the refrigerant distribution valve has a circuit fault, or the climate control module asked the engine computer to light the warning lamp (P2561).
SeverityLowLittle risk to the car, but the fault stays until it is repaired.
Can you keep driving?Safe to drive, book a checkWhat does P2515 mean?
When you switch on the air conditioning, the climate control sends a request to the engine computer, which then engages the compressor, raises the idle and starts the fans. A second pressure sensor and, on some cars, a valve that shares refrigerant between front and rear evaporators complete the system. P2561 means the climate control module found a fault of its own and asked for the warning lamp. These codes affect comfort, not how the engine runs.
What causes P2515?
- A failed pressure sensor B or a damaged wire to it
- A wiring fault between the climate control and the engine computer
- A fault inside the climate control module, for P2561
- A failed refrigerant distribution valve, on cars with rear air conditioning
What to check first for P2515
- Check whether the compressor engages and the air gets cold
- Read the climate control module's own codes
- Inspect the pressure sensor connector in the engine bay
- Have the refrigerant pressure measured with gauges
Can you drive with P2515?
You can drive safely. If the air conditioning does not work and the windshield fogs, use the defroster and ventilation, and do not drive until you can see clearly.
In states with an OBD-II emissions inspection, a car with the check engine light on fails the test until the fault is fixed.
Codes on this page
14
- P2515A/C Refrigerant Pressure Sensor "B" Circuit
- P2516A/C Refrigerant Pressure Sensor "B" Circuit Range/Performance
- P2517A/C Refrigerant Pressure Sensor "B" Circuit Low
- P2518A/C Refrigerant Pressure Sensor "B" Circuit High
- P2519A/C Request "A" Circuit
- P2520A/C Request "A" Circuit Low
- P2521A/C Request "A" Circuit High
- P2522A/C Request "B" Circuit
- P2523A/C Request "B" Circuit Low
- P2524A/C Request "B" Circuit High
- P2561A/C Control Module Requested MIL Illumination
- P2611A/C Refrigerant Distribution Valve Control Circuit/Open
- P2612A/C Refrigerant Distribution Valve Control Circuit Low
- P2613A/C Refrigerant Distribution Valve Control Circuit High
Related codes
Checked on · Rafael Soares
These are the generic meanings every manufacturer shares. Each brand adds its own detail, so your car's handbook, its service information and a qualified mechanic have the last word. OdoKeep has no connection with any manufacturer, and the app does not read codes from the car.
