Code 1260

simondhopkins · 20th January 2018, 13:28

Ok my CDTI is coming up with: code 1260 pre-supply pressure monitoring error.
Fuel pre-supply pre-pressure 3.84 bar
reduction due to low pre-supply pressure
pre-supply pressure blew min value for eng start, yet it starts.

I keep clearing it but it comes back on next start, it don't have the under bonnet pump being a mk2.

Anyone know what this could be?

Thanks.

Bogbrush82 · 20th January 2018, 14:34

Could be the fuel pump at the rear?

Mike Noc · 20th January 2018, 16:40

Check and clean the plug connection to the LP fuel pressure sensor, also check the wiring going to it. It sits on top of the fuel filter just inboard of the battery.

marinabrian · 22nd January 2018, 20:15

That "fault" is logged every time an NNN500340 ECM is allowed to time out the pump..... i.e.when you're fannying on with TOAF with the ignition turned on and the pump stops after running for a minute

Don't worry about it

Brian

myfirstrover · 22nd January 2018, 20:19

Quote:

Originally Posted by marinabrian

That "fault" is logged every time an NNN500340 ECM is allowed to time out the pump..... i.e.when you're fannying on with TOAF with the ignition turned on and the pump stops after running for a minute

Don't worry about it

Brian

I love these technical explanations

bl52krz · 22nd January 2018, 21:35

Do you do much fannying about Brian?

marinabrian · 23rd January 2018, 10:46

Quote:

Originally Posted by bl52krz

Do you do much fannying about Brian?

Loads

Brian

20th January 2018, 13:28	#1
simondhopkins Loves to post Vauxhall Vectra C Join Date: Jul 2016 Location: Burnley Posts: 445 Thanks: 179 Thanked 88 Times in 62 Posts	Code 1260 Ok my CDTI is coming up with: code 1260 pre-supply pressure monitoring error. Fuel pre-supply pre-pressure 3.84 bar reduction due to low pre-supply pressure pre-supply pressure blew min value for eng start, yet it starts. I keep clearing it but it comes back on next start, it don't have the under bonnet pump being a mk2. Anyone know what this could be? Thanks.

20th January 2018, 14:34	#2
Bogbrush82 I really should get out more....... BMW X3 2.0D Join Date: May 2017 Location: Tipton Posts: 2,383 Thanks: 51 Thanked 765 Times in 421 Posts	Could be the fuel pump at the rear? __________________ Current car: BMW x3 2.0d (The one with the M47 engine!) Rolled off the line on December 14th, 2004.

22nd January 2018, 21:35	#6
bl52krz This is my second home Rover 75 cdt club + Rover 2.5 KV6 Conni SE Join Date: May 2008 Location: Birmingham Posts: 11,394 Thanks: 6,587 Thanked 2,262 Times in 1,729 Posts	Do you do much fannying about Brian? __________________ Great Barr, Birmingham.

20th January 2018, 16:40	#3
Mike Noc This is my second home Rover 75 CDT Manual Connoisseur SE, Rover 75 CDT Automatic Connoisseur SE & a Freelander Td4. Join Date: Jul 2009 Location: Hampshire Posts: 11,550 Thanks: 3,470 Thanked 3,119 Times in 2,247 Posts	Check and clean the plug connection to the LP fuel pressure sensor, also check the wiring going to it. It sits on top of the fuel filter just inboard of the battery.

22nd January 2018, 20:15	#4
marinabrian MG ZT Join Date: Jan 2011 Location: Newcastle Upon Tyne Posts: 20,151 Thanks: 3,565 Thanked 10,837 Times in 5,718 Posts	That "fault" is logged every time an NNN500340 ECM is allowed to time out the pump..... i.e.when you're fannying on with TOAF with the ignition turned on and the pump stops after running for a minute Don't worry about it Brian