P2291 26 fault

This is the Forum for all your Peugeot Technical Questions, Problems or Advice.
Kmarcus
Posts: 12
Joined: 03 Feb 2023, 16:36

P2291 26 fault

Unread post by Kmarcus »

Replaced injectors on my euro 5 2015 boxer. New seals and bolts plus a new leak off pipe.

Engine cranks over but wont start up. Getting the P2291 26 code.

Please see attached the reading from diagbox. Any advice is welcome.

Thanks.
Attachments
16769096216624485439940250411259.jpg
User avatar
GiveMeABreak
(Donor 2016)
Posts: 42019
Joined: 15 Sep 2015, 19:38
x 6955

Re: P2291 26 fault

Unread post by GiveMeABreak »

Here you go:
Fault Code: P2291 26
Description of Fault: Starting monitoring: Pressure increase in the injection rail too slow when starting. On starting, the fuel high pressure common injection rail pressure requested is not attained at the end of 12s.
Conditions of activation of the diagnostics: Engine starting.
Conditions for Fault to clear: Under starter.
Downgrade Modes whilst Fault is active:
  • Deactivation of regeneration of the after-sales particle emission filter, both static (vehicle stopped) and dynamic (vehicle on the move)
  • Deactivation of the injection compensation strategies
  • Deactivation of the Stop and Start function
Symptoms:
  • Malfunctioning of the engine when idling
  • Lack of power
  • Starting problem
  • Jerking/stalling
  • Fluid leak/smells (diesel fuel, oil, etc.)
  • Engine stop downgraded
Suspect Areas:
  • Low pressure fuel circuit
  • Diesel fuel filter
  • Fuel injectors
  • Electrical harness
  • Connectors
  • Fuel high pressure sensor
  • Fuel high pressure common injection rail
Please note, I'm no longer active on the Forum, so won't respond to messages.

Marc
malc4
Posts: 63
Joined: 17 Jun 2024, 12:39
x 3

Re: P2291 26 fault

Unread post by malc4 »

My friends P2291 turned out to be air in fuel system due to some numpty mechanic only fitting one of the 3 bolts on the fuel filter housing...