P2518

A/C Refrigerant Pressure Sensor B Circuit High

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$17–56 (est.)

Symptoms

Air conditioner doesn't work
Reduced cooling efficiency
The air conditioning indicator is flashing
The air conditioner turns on and off spontaneously
Increased noise from the compressor

Causes

Faulty refrigerant pressure sensor
Open or short circuit in the sensor circuit
Poor contact in the sensor connector
Problems with the air conditioning ECU
Excessive pressure in the system (refrigerant recharge)

How to Fix

Check the refrigerant level in the system
Inspect the connectors and wiring of the sensor
Check the resistance and voltage at the sensor
Replace pressure sensor if necessary
Check the operation of the air conditioning compressor

Related codes

P2517 P2519 P0532