Ford Transit 2019 minibus Parkng aid fault

[Ryan9153]

Hi Guys got a transit minibus where the Parking aid malfunction is on the dash, scanned it with forescan and it comes up with all four rear parking sensors at fault which I doubt to be true must be wiring or module itself surely.
Codes are B1B44:31-2A same but 46,48 and 50 are the other fault codes. Input most welcome.

Thanks

[knobby1]

Hi Guys got a transit minibus where the Parking aid malfunction is on the dash, scanned it with forescan and it comes up with all four rear parking sensors at fault which I doubt to be true must be wiring or module itself surely.
Codes are B1B44:31-2A same but 46,48 and 50 are the other fault codes. Input most welcome.

Thanks

Have you physically checked the wiring and/or connectors to make sure they're not damaged/corroded..??

Lord Knobrot

[Ryan9153]

Hi Guys got a transit minibus where the Parking aid malfunction is on the dash, scanned it with forescan and it comes up with all four rear parking sensors at fault which I doubt to be true must be wiring or module itself surely.
Codes are B1B44:31-2A same but 46,48 and 50 are the other fault codes. Input most welcome.

Thanks

Have you physically checked the wiring and/or connectors to make sure they're not damaged/corroded..??

Lord Knobrot

Checked the wires on the back behind bumper looks ok no corrosion that I can see but very wet, loom looks ok but haven’t opened it up yet.

[Frag]

If you can’t see any signs of trapped or damaged wiring initially,and loom to main harness multiplugs not corroded,before you start pulling loom to bits,try disconnecting each sensor individually and clearing/re-reading codes.
1 bad sensor can bring all 4 down and give that fault.
If you unplug that faulty one you’ll then just get a dtc for that particular one being open circuit,not all 4.

[Ryan9153]

If you can’t see any signs of trapped or damaged wiring initially,and loom to main harness multiplugs not corroded,before you start pulling loom to bits,try disconnecting each sensor individually and clearing/re-reading codes.
1 bad sensor can bring all 4 down and give that fault.
If you unplug that faulty one you’ll then just get a dtc for that particular one being open circuit,not all 4.

Roger that bud will try that tomorrow and get back to you.
Many thanks.

[Ryan9153]

If you can’t see any signs of trapped or damaged wiring initially,and loom to main harness multiplugs not corroded,before you start pulling loom to bits,try disconnecting each sensor individually and clearing/re-reading codes.
1 bad sensor can bring all 4 down and give that fault.
If you unplug that faulty one you’ll then just get a dtc for that particular one being open circuit,not all 4.

Roger that bud will try that tomorrow and get back to you.
Many thanks.

Disconnected rear right sensor put back and codes cleared so not hold in my breath but we will see.