BMW DTC P15F5 – Charge Air Cooler Coolant Pump 2 Undervoltage
DTC P15F5 meaning on BMW
DTC P15F5 on a BMW indicates an undervoltage condition in Charge Air Cooler Coolant Pump 2. This fault code is specific to the charge air cooler coolant pump, which is responsible for circulating coolant through the charge air cooler to help regulate the temperature of the intake air.
BMW DTC P15F5 symptoms
Symptoms of DTC P15F5 on a BMW may include reduced engine performance, rough idling, engine overheating, and potentially a check engine light illuminated on the dashboard. The vehicle may also go into a reduced power mode to prevent further damage.
BMW DTC P15F5 causes
The most common causes of DTC P15F5 on a BMW are a faulty charge air cooler coolant pump, damaged wiring or connectors related to the pump, or a malfunction in the pump control module. Low coolant levels or air pockets in the cooling system can also trigger this fault code.
BMW DTC P15F5 seriousness
DTC P15F5 should be addressed promptly to prevent potential engine damage due to overheating. Ignoring this fault code can lead to further issues with the cooling system and may result in costly repairs if left unresolved.
How to diagnose DTC P15F5 on BMW
To diagnose DTC P15F5 on a BMW, a diagnostic scan tool capable of reading BMW fault codes is required. The technician should inspect the charge air cooler coolant pump, check the wiring and connectors for any visible damage, and test the pump control module for proper operation. Additionally, verifying coolant levels and purging any air from the system is recommended.
How to fix DTC P15F5 on BMW
Fixing DTC P15F5 on a BMW typically involves replacing the charge air cooler coolant pump if it is found to be faulty. Repairing or replacing damaged wiring or connectors, as well as addressing any issues with the pump control module, may also be necessary. Ensuring proper coolant levels and system bleeding is essential to prevent recurrence of the fault code.
How to erase DTC P15F5 on BMW
After addressing the underlying cause of DTC P15F5 on a BMW, the fault code can be erased using a diagnostic scan tool. Clearing the code will reset the vehicle’s engine control module and turn off the check engine light. It is important to verify that the issue has been resolved before clearing the fault code.
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.