C5 hdi codes help needed

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C5hdi77
Posts: 3
Joined: 12 Feb 2019, 16:47

C5 hdi codes help needed

Post by C5hdi77 »

Hi all, i am new member but i was following here as guest. I am hoping to get some advice and input to the problem i have with my C5 1.6hdi 2006.
After changing crank shaft due to knocking, i could not start the car and i have the following fautls codes ;
PO193, PO402, PO201, PO202, PO203, PO204. Connections seem fine. could it be,
- Electrical problem, therefore should i look in the fuse box, are there any relays...etc.
- fuel pump timing, i found two diagrams for 1.6 hdi where pump timing are different.
Any suggestions would be great.
Cheers.
RichardW
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Joined: 07 Aug 2002, 17:12
x 963

Re: C5 hdi codes help needed

Post by RichardW »

Welcome!

What did you do to the engine? Drop it out, then drop the crank from the bottom and fit new, or did you completely strip it? Pump timing shouldn't matter on an HDi.

P0193 looks like fuel rail pressure high, P0201 - 4 look like injector fault codes, so they're probably linked. You would really need to get some live data to see what the ECU is seeing. e.g is it high rail pressure at key on, or only when cranking? Is the ECU seeing the engine rotating? Is it seeing cam and crank in synch?
Richard W
C5hdi77
Posts: 3
Joined: 12 Feb 2019, 16:47

Re: C5 hdi codes help needed

Post by C5hdi77 »

Thanks for quick reply, i removed engine from its bay, them worked from the bottom , head stayed on ..etc.
Unfortunately i do not have lexia, i just read the faults via android app. I guess i will need lexia to read live data.
You helped me rulle out timing, and that saves the hassle of rechecking. Cam and Crank are in line but there should be other codes if there was a problem.
The crankshaft is the same, and engine rotate fine until ecu shuts off.
picassodad
Posts: 251
Joined: 04 Oct 2018, 14:26
x 14

Re: C5 hdi codes help needed

Post by picassodad »

Do you know of the free mechanics handbooks on here which may help......
wheeler
Posts: 6795
Joined: 21 Sep 2002, 19:07
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Re: C5 hdi codes help needed

Post by wheeler »

Will it fire with a spray of easy start?
C5hdi77
Posts: 3
Joined: 12 Feb 2019, 16:47

Re: C5 hdi codes help needed

Post by C5hdi77 »

Yes i have looked at them, tahnks.
I haven't tried the easy start because it shuts off after few cranks, i guess it is to prevent any damage. The speed sensor disc came off the tming pulley when iremoved it, but i managed to fit it back.
Now my question is the timing on these engines is not on tdc , am i right ?
I was told that oem lexia dosen't work well on newer c5, mine is 2006 ?
Any ideas ?