P2518 Code Definition
P2518 A/C Refrigerant Pressure Sensor 'B' Circuit High
What Does the Engine Code P2518 Mean?
Character "P" in the first position of Diagnostic Trouble Code (DTC) represents the powertrain system (engine and transmission), "2" in the second position means that this is a ISO/SAE controlled OBD-II (OBD2) DTC. "5" in the third character position in a DTC indicates that the vehicle speed, idle control and auxiliary inputs is experiencing a malfunction. The last two characters "18" is DTC number. OBD2 Diagnostic Trouble Code P2518 means that A/C Refrigerant Pressure Sensor 'B' Circuit High has been detected.
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How Serious Is the Code P2518?
For now, this issue is not serious. Carly recommends you to check this issue on a regular basis and check if it gets worse later on.