BMW DTC U117B – Charge Air Cooler Coolant Pump Communication Plausibility
DTC U117B meaning on BMW
The DTC U117B code on a BMW indicates a communication plausibility issue with the charge air cooler coolant pump. This means that there is a problem with the communication between the control module and the charge air cooler coolant pump, which can affect the performance of the vehicle.
BMW DTC U117B symptoms
Some common symptoms of the DTC U117B code on a BMW may include:
- Check Engine Light illuminated
- Reduced engine performance
- Engine overheating
- Increased fuel consumption
BMW DTC U117B causes
The DTC U117B code on a BMW can be caused by various factors, including:
- Faulty charge air cooler coolant pump
- Wiring or connection issues
- Defective control module
- Low coolant level
BMW DTC U117B seriousness
The DTC U117B code should not be ignored as it can lead to engine performance issues and potential overheating problems. It is important to address this code promptly to prevent further damage to the vehicle.
How to diagnose DTC U117B on BMW
To diagnose the DTC U117B code on a BMW, a mechanic may perform the following steps:
- Use a diagnostic scanner to retrieve the fault codes
- Inspect the charge air cooler coolant pump for any visible damage
- Check the wiring and connections for any signs of wear or corrosion
- Test the control module for proper functionality
How to fix DTC U117B on BMW
To fix the DTC U117B code on a BMW, the following steps may be taken:
- Replace the faulty charge air cooler coolant pump
- Repair or replace any damaged wiring or connections
- Reset the fault codes using a diagnostic scanner
- Perform a test drive to ensure the issue has been resolved
How to erase DTC U117B on BMW
To erase the DTC U117B code on a BMW, follow these steps:
- Use a diagnostic scanner to clear the fault codes
- Ensure that the underlying issue causing the code has been addressed
- Perform a test drive to confirm that the code does not reappear
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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