BMW P1791: EEPROM Failure

Is your scanner showing BMW P1791?
No worries. We'll show you what it means and how to deal with it.

Presented by
Randy Worner

BMW P1791: EEPROM Failure

OVERVIEW
Severity
:
Medium
DIY Difficulty Level
:
Intermediate
Repair Cost
:
$100-$250
Can I Still Drive?
:
Yes

What Does The BMW P1791 Code Mean?

During the self check, the EEPROM check detected an invalid checksum. The self/rationality check EEPROM resulted in an invalid checksum at power up.

What Are The Potential Causes Of The BMW P1791 Code?

  • Battery terminal corrosion, or loose battery connection
  • Connection to the DME interrupted, or the circuit has been opened
  • Reprogramming error has occurred and needs replacement. Remember to check for Aftermarket Performance Products before replacing.

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
>>> UTSAUTO Battery Terminal T-Bolt Kit 19116852 64740 Battery Cable Tensioner Bolt Screw 2-Pack

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

Reference Sources

BMW P1791, DTCDECODE.

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