BMW P1891: TCC Power Supply Upper Threshold
Is your scanner showing BMW P1891?
No worries. We'll show you what it means and how to deal with it.
BMW P1891: TCC Power Supply Upper Threshold
OVERVIEWWhat Does The BMW P1891 Code Mean?
Engine started to 400rpm, FET enabled, vehicle driven in gear with VSS signals received, and the DME detected a the battery voltage was greater than the threshold value (greater than 16 volts) while in normal operation.
What Are The Potential Causes Of The BMW P1891 Code?
Below are some potential causes of this DTC:
- TCC solenoid has a mechanical failure
- TCC solenoid has a hydraulic failure
Recommended Parts
Below are some recommended auto parts to help you address the trouble code affecting your vehicle and get it running smoothly again:
>>> WORKPRO 582-piece Crimp Terminals, Wire Connectors, Heat Shrink Tube, Electrical Repair Kit
>>> BMW Torque Converter Lockup Solenoid - Genuine BMW 24327532013
Note: During the purchasing process, please check carefully whether the part you want to buy fits your car!
Reference Sources
BMW P1891, DTCDECODE.
