BMW DTC P2518 – A/C Refrigerant Pressure Sensor ‘B’ Circuit High
DTC P2518 meaning on BMW
The Diagnostic Trouble Code (DTC) P2518 for BMW indicates an issue with the A/C Refrigerant Pressure Sensor ‘B’ Circuit registering a high voltage signal. This sensor is responsible for monitoring the pressure of the air conditioning refrigerant in the system.
BMW DTC P2518 symptoms
Symptoms of DTC P2518 on a BMW may include:
- Malfunctioning air conditioning system
- AC compressor not engaging
- Check Engine Light (CEL) illuminated on the dashboard
BMW DTC P2518 causes
Potential causes of DTC P2518 on a BMW include:
- Faulty A/C Refrigerant Pressure Sensor ‘B’
- Wiring or connector issues in the sensor circuit
- Low refrigerant levels in the A/C system
BMW DTC P2518 seriousness
While DTC P2518 may not directly affect the drivability of the vehicle, it can lead to discomfort due to a malfunctioning air conditioning system. It is recommended to address this issue to ensure proper cooling and diagnose any underlying problems.
How to diagnose DTC P2518 on BMW
To diagnose DTC P2518 on a BMW, you can follow these steps:
- Use a diagnostic scanner to retrieve the fault code and freeze frame data
- Inspect the A/C Refrigerant Pressure Sensor ‘B’ and its wiring for any visible damage
- Check the refrigerant levels in the A/C system
- Perform a thorough inspection of the A/C system components for any other issues
How to fix DTC P2518 on BMW
To fix DTC P2518 on a BMW, you can try the following solutions:
- Replace the faulty A/C Refrigerant Pressure Sensor ‘B’
- Repair any damaged wiring or connectors in the sensor circuit
- Recharge the refrigerant in the A/C system to the proper levels
- Clear the fault code and test the A/C system for proper operation
How to erase DTC P2518 on BMW
To erase DTC P2518 on a BMW, you can use a diagnostic scanner to clear the fault code from the vehicle’s memory. After addressing the underlying issue and fixing the problem, you can reset the code to ensure that the system recognizes the repair.
Recommended tools & DTC Scanners for BMW
Best Diagnostic App for modern BMWs: BimmerLink
Recommended Bluetooth adapter for Bimmerlink: OBDLink CX
Cable adapter for Bimmerlink: Enet Cable USB Type C
For older BMWs we recommend: Autel AutoLink AL319 (2024 version)
Easy-to-use Multimeter for reliable diagnostics: AstroAI Auto-ranging Multimeter
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