2000 BMW 750Li P1400 Trouble Code

2000 BMW 750LI
60,125 MILES • V12 • 2WD • AUTOMATIC
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MIKE POGGI
  • MEMBER
  • 1 POST
I understand that the code P1400 means "Heated catalyst Battery voltage or current too low during heating (bank 1)".

What does this mean and what is the fix?
Aug 23, 2008 at 3:52 PM
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DOCHAGERTY
  • ✓ASE Certified Mechanic
  • 9,606 POSTS
  • ASE Certified Mechanic
It could mean there is a faulty sensor or there might be some damage to the wiring or there is a voltage drop from the b+ supply circuit.
Aug 23, 2008 at 7:31 PM
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