Xantia 2.0HDi Non-Start - Lexia Observations and NOW Screenshots!

[white exec]

The same part.

[GiveMeABreak]

That's very useful Chris.

@Roger: If it is the Relay in the diagram, they are still showing as available from Citroen. Part number: 19207L and they cost today £30.73 inc. VAT, but may need to be ordered in from somewhere by the dealer.

[Rhothgar]

Not sure why my last post has not appeared. I swear that I didn't click away from the window. Learnt from that mistake.

Here's a more concise version:-

Permanent fault P0340 appears after having cleared fault codes. Something like Camshaft / Crankshaft Synchronisation lacks coherence with engine speed sensor.

Why does it not produce TWO fault codes for the two components. Might just swap out both for new as I do not want to get dragged down a rabbit hole again by the car.

I guess I need to scope both sensors and see which has failed. Damned car!

Also, although I only did it 20-30 minutes ago I cannot remember if I could see the engine rpm as it was cranking over? Fuel pressure was fine. Camshaft/ Crankshaft synchronisation: no.

Is that enough information to condemn both sensors? And why after an oil change has this happened? Maybe not coincidence? Of course, it drove home from my mate's. Used an engine flush. Perhaps I should take camshaft sensor out and give that a wipe over.

[CitroJim]

Definitely worth whipping them out and cleaning them Roger - nothing to loose... Sometimes ABS sensors give low outputs because they're covered in muck and iron filings...

An oscilloscope check should identify the culprit... One sensor may be a bit marginal and giving a low output... Hopefully due to being mucky

The reason, I would think, for the dual fault is that the ECU is unable to determine cam and crank position and cannot tell which sensor is causing the problem...

I may be wrong...

[Rhothgar]

Finally got around to scoping the Camshaft and Crankshaft Position Sensors.

The Crankshaft Position Sensor is the culprit.

Can one of the admins tell me if the crankshaft position sensor on my car. VF7**************[VIN obfuscated, can be read by forum staff] (Think that's correct off top of my head) is identical on this Peugeot. I've read on the forum that some Peugeot HDi's can be different and located at the crankshaft pulley. VIN of Peugeot in scrappers is VF3**************[VIN obfuscated, can be read by forum staff].

And has anyone used BestPartStore, AutoDoc or Motor-Doctor for parts? Just wondering what your experiences are? Some crankshaft sensors are like £7 and it wouldn't be worth going to the scrappers if they are the right part. Wondering if they are as shambolic as ECP?

I think you're right BTW Jim. The MIL light doesn't come on for a CPS fault presumably because it is unable to determine which sensor is causing the problem.

When I whipped mine out, measured the resistance and it is 1.2 Mega Ohms...

Just strange how it's gone after the car was sitting for 2 years and then sits for a month after limited use!

[CitroJim]

Good work Roger

Just strange how it's gone after the car was sitting for 2 years and then sits for a month after limited use!

It's French so nothing is strange

[admiral51]

Good work Roger

Just strange how it's gone after the car was sitting for 2 years and then sits for a month after limited use!

It's French so nothing is strange

Slightly off topic but a good few years ago the firm i used to work for had a lorry parked up in the yard for 4 days, not been touched by anyone, walking up the yard to the office whilst with the Boss we heard a pop and hiss, a tyre had just got a puncture

[Rhothgar]

Slightly off topic but a good few years ago the firm i used to work for had a lorry parked up in the yard for 4 days, not been touched by anyone, walking up the yard to the office whilst with the Boss we heard a pop and hiss, a tyre had just got a puncture

Mad, isn't it?

[CitroJim]

Slightly off topic but a good few years ago the firm i used to work for had a lorry parked up in the yard for 4 days, not been touched by anyone, walking up the yard to the office whilst with the Boss we heard a pop and hiss, a tyre had just got a puncture

Mad, isn't it?

It is but it happens... I once observed, from a decent distance, the rear window of a MK1 Chavalier spontaneously implode...

That was in 1977. The car in question was almost new...

[Rhothgar]

Slightly off topic but a good few years ago the firm i used to work for had a lorry parked up in the yard for 4 days, not been touched by anyone, walking up the yard to the office whilst with the Boss we heard a pop and hiss, a tyre had just got a puncture

Mad, isn't it?

It is but it happens... I once observed, from a decent distance, the rear window of a MK1 Chavalier spontaneously implode...

That was in 1977. The car in question was almost new...

It wasn't your laser eyes that did it then Jim?

That was the year Superman was released wasn't it?

[Rhothgar]

BTW Jim,

Check out my latest post on Citroen forum P0340. It has the oscilloscope traces.

I think you'll be interested to see them!

[CitroJim]

BTW Jim,

Check out my latest post on Citroen forum P0340. It has the oscilloscope traces.

I think you'll be interested to see them!

I will indeed Roger

It is but it happens... I once observed, from a decent distance, the rear window of a MK1 Chavalier spontaneously implode...

That was in 1977. The car in question was almost new...

It wasn't your laser eyes that did it then Jim?

Now that would be telling