P1351 code help

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Moderator: RichardW

Xs850+
Posts: 7
Joined: 12 Jan 2022, 17:24

P1351 code help

Post by Xs850+ »

Hi would a P1351 pending code stop my Citroen C4 grand Picasso 1.6 HDI 2007 from actually starting it cranks over okay it does not start I thought there was a fault with the injectors
But on OBD two it’s come up with this code ignition coil control circuit high voltage
ITM input circuit malfunction/ignition coil control circuit high voltage SID 803/EDC16C3/pre-post heated relay circuit. Really not controlled and glow plugs supplied
My understanding is the glow plugs would only come on in very cold weather and shouldn’t really stop the car from starting if this is right any help would be appreciated thank you
RichardW
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Posts: 9702
Joined: 07 Aug 2002, 17:12
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Re: P1351 code help

Post by RichardW »

P1351 is almost always present and will not inhibit starting. You'd need to get some live data from the ECU whilst cranking to see what is missing and preventing starting.
Xs850+
Posts: 7
Joined: 12 Jan 2022, 17:24

Re: P1351 code help

Post by Xs850+ »

Hi thanks for your reply I have had some data I can see the fuel pressure goes up to over 5000 and I can see the rev counter goes at about 300rpm so I’m assuming things like cam sensor crank sensor are okay and the fuel pressure seems good just don’t understand why it just doesn’t start