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P2518 is a diagnostic trouble code (DTC) for "A/C Refrigerant Pressure Sensor “B” Circuit High". This can happen for multiple reasons and a mechanic needs to diagnose the specific cause for this code to be triggered in your situation. Our certified mobile mechanics can come to your home or office to perform the Check Engine Light diagnostic. Once we are able to diagnose the problem, you will be provided with an upfront quote for the recommended fix and receive $20.00 off as a credit towards the repair. All our repairs are backed by our 12-month / 12,000-mile warranty.
A/C Refrigerant Pressure Sensor “B” Circuit High
P2518 is an OBD-II generic code for the engine control module (ECM) detecting the A/C refrigerant pressure sensor B is shorted to reference voltage.
The ECM got a short circuit signal from the A/C refrigerant pressure sensor B and sets the code in memory.
The signal may come through the A/C control module through the network on some vehicles.
Scans codes and documents the code in the ECM or A/C module
Checks the A/C system charge level to make sure it is okay
Compares sensor A and sensor B to compare sensors input versus the actual charge level
Performs the manufacture pinpoint test on the A/C sensor to verify the failed sensor or wiring
Code P2518 is a code for the A/C system and will only be an uncomfortable situation due the A/C not working on a hot day.
Code P2518 is not very common since most vehicles do not have two pressure sensors in the A/C systems they have and only use one.
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