Codes PO131 and PO140

Tiny
HENRY KATRIS
  • MEMBER
  • 2003 MERCEDES BENZ E320
  • 3.2L
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 112,000 MILES
Got reading: po131 bank 1 sensor 1, and. Po140 bank 1 sensor 2. Please tell what side bank 1. And where are fuse relay located? Thanks, Henry.
Sunday, January 12th, 2020 AT 10:56 AM

1 Reply

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,640 POSTS
Hi,

Bank 1 will contain the number 1 cylinder. In this case, it is the right side. See pic 1.

Pic 2 (fuse/relay box) engine compartment left side.

Pic 3 (fuse box) interior of vehicle / driver's side.

Pic 4 (fuse box) trunk.

Let me know if this is what you needed.

Take care,
Joe
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Sunday, January 12th, 2020 AT 8:46 PM

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