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Old 20-06-2018   #1
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PO351 & PO301 for all cylinders

I'm getting these codes for all the cylinders. Is this an ECI issue? Where should I start to diagnose this? Thanks
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Old 21-06-2018   #2
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Re: PO351 & PO301 for all cylinders

P0351 is Ignition Coil A, Primary/Secondary Circuit Malfunction.

That would cause P0301 - Cylinder #1 Misfire if that coil is playing up.

I believe each cylinder has it's own "pencil" coil on top of each plug, "A" is number 1 cylinder. (P0301 is misfire on number 1 cylinder).

You could try clearing the codes, then swapping cylinder 1's coil over with another and see if the issue moves with that particular coil.

If it does and you get a new set of codes relating to the cylinder you moved the coil too, then it's that individual coil that fubar.

If it doesn't move, you've likely a wiring issue to number 1 coil.
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Last edited by Goudrons; 21-06-2018 at 06:56.
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Old 21-06-2018   #3
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Re: PO351 & PO301 for all cylinders

This shows you how to get at the coils.

Number one is usually at the end furthest from the gearbox (left as you stand in front, though it's on the right in the vid as it's filmed from the back of the engine bay)
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Old 21-06-2018   #4
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Re: PO351 & PO301 for all cylinders

They are numbered 1,2,3,4 from left to right and in relief print on the coil pack itself.
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