BMW P1056: Valvetronic (VVT) Supply Voltage Control Motor Low Input (Bank 1)

Is your scanner showing BMW P1056?
No worries. We'll show you what it means and how to deal with it.

Presented by
Randy Worner

BMW P1056: Valvetronic (VVT) Supply Voltage Control Motor Low Input (Bank 1)

OVERVIEW
Severity
:
Medium
DIY Difficulty Level
:
Intermediate
Repair Cost
:
$75-$200
Can I Still Drive?
:
Yes

What Does The BMW P1056 Code Mean?

Key on for 200ms, the DME detected that the supply voltage was too low (less than 5 volts).

What Are The Potential Causes Of The BMW P1056 Code?

  • VVT fuse is faulty
  • Defective load reduction relay
  • Plug/Kb-B open circuit in power supply circuit
  • Plug/Kb-B open circuit in relay supply circuit

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
>>> JOREST 168 Pcs Car Fuse Assortment Kit

Note: During the purchasing process, please check carefully whether the part you want to buy fits your car!

Check This Video For Reference

Reference Sources

BMW P1056, DTCDECODE.

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