BMW DTC P144E – Fan Safety Relay Circuit High
DTC P144E meaning on BMW
DTC P144E in a BMW indicates a fault in the Fan Safety Relay Circuit High. This fault code is related to the cooling fan system of the vehicle. The Engine Control Module (ECM) monitors the operation of the cooling fan relay circuit and triggers this diagnostic trouble code when it detects a high voltage condition in the circuit.
BMW DTC P144E symptoms
Symptoms of DTC P144E in a BMW may include:
- Engine overheating
- Malfunctioning cooling fan
- Check Engine Light illuminated on the dashboard
BMW DTC P144E causes
Common causes of DTC P144E in a BMW include:
- Faulty cooling fan relay
- Short circuit in the cooling fan relay circuit
- High resistance in the cooling fan relay circuit
BMW DTC P144E seriousness
DTC P144E in a BMW should be addressed promptly to prevent potential engine overheating and damage. Ignoring this fault code can lead to severe engine issues and compromise the vehicle’s performance and reliability.
How to diagnose DTC P144E on BMW
To diagnose DTC P144E on a BMW, you can follow these steps:
- Use a diagnostic scanner to retrieve the fault code and freeze frame data.
- Inspect the cooling fan relay and its wiring for any visible damage or corrosion.
- Check the voltage and resistance in the cooling fan relay circuit using a multimeter.
- Perform a thorough visual inspection of the cooling fan system components.
How to fix DTC P144E on BMW
To fix DTC P144E on a BMW, you can try the following solutions:
- Replace the faulty cooling fan relay with a new one.
- Repair any damaged or corroded wiring in the cooling fan relay circuit.
- Clean any connectors or terminals related to the cooling fan system.
- Clear the fault code and test the cooling fan system for proper operation.
How to erase DTC P144E on BMW
To erase DTC P144E on a BMW, you can use a diagnostic scanner to clear the fault code from the ECM’s memory. After performing the necessary repairs and ensuring the issue is resolved, you can reset the fault code and monitor the system for any reoccurrence.
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
Some of the links on this page may be affiliate links, which means we may earn a small commission if you make a purchase. This helps us keep our DTC database up to date and provide valuable content for free. We only recommend products that we have tested and believe to be the best in their class.