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Discussion Starter · #1 ·
Ive got a DTC reporting a fault in cam sensor & crank sensor. Haynes shows crank but no mention of Cam. seaching on web shows no real details on a cam sensor for my engine & some part suppliers list the crank sensor as cam/crank sensor.
Can anyone give more insight into this?

cheers
 

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Corsa c specialist
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Hi,i beleive its built into the diesel pump on this engine,dont think it can be changed seperatly
 

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VXon Frontera Monkey
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Nope no cam sensor on a diesel - just a crank sensor - £25-28 +vat trade depending on year
cheers
Steve
 

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Discussion Starter · #4 ·
if there is no cam sensor wy am i getting (using vauxcheck) code P0340 camshaft position sensor A Circuit malfunction (Bank 1 or single sensor)
 

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Corsa c specialist
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A vauxhall technician told me its built into the pump hence the code maybe
 

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I think the 2.0l DTI use a Bosch VP44 fuel pump, it rotates at half engine speed (same as the camshaft) and has a speed / engine cycle sensor built in to it. If you want to see how its built Google VP44 and look at the sectioned images.
They use "cam" sensor in the code name because the names are pre-defined by standards and its the nearest appropriate name.

When my crank sensor had an intermittent failure I also got "cam" sensor codes (and a few more besides).

Check the vaux price for a crank sensor before getting one off the internet. I found them not to be as expensive as I imagined and you know you are getting the right one the following day.
 

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Corsa c specialist
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That would probably explain it as ive often seen cam sensor codes flagged up when a faulty crank sensor has been the culprit.From experience would only use genuine vauxhall sensors
 

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I refuse to grow up.
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I have known (On petrol cars) to have a cam sensor fault and what it really means is a disparity between the crank and cam sensor data, it has in my experience been because one has been changed without the other, rare but I have come across it. Thankfully it is rare LOL.
 

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Corsa c specialist
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Ive changed many crank sensors on these,they usually cause non start when warm
 

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Hi, I know this is an old post but just wondered what the outcome/solution was.
I have a similar fault on my Vectra C (Y20DTH).
Codes P0340 and P0355 (cam sensor and crank sensor).
Drives ok till the engine warms up then goes into limp mode, won't go above about 2000rpm and no power especially on hills!
Any advice would be great. Thank you
 

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Cool - I believe they are also on eBay that or there is a seller using their photos :)

Thank you worth keeping an eye on them !
 

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Fitted the crank sensor. Codes cleared and they haven't returned but it's still lacking power. Found a small hole in the left hand intercooler pipe near the jubilee clip. Managed to trim end and refit but made no difference. Ordered one off eBay just in case.

Not sure what to try next.

Will try and take it for a good run out tomorrow and see if any codes come up.
 

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The usual suspect are;
Leaking vac pipe or rubber elbow,
MAP sensor needs a clean along with inlet manifold / swirlflaps,
I removed each of the solenoids and sprayed brake cleaner through them - clears any gunge. Its also means you can examine the vac pipes and fittings for leaks.

The last time my car was down on power I changed the solenoid that supplies the turbo solenoid its vac supply as I managed to snap off one of the spigots cleaning it (its on the bulk head near the turbo / AMF) along with all of the vac lines - I used silicon vacuum pipe with a 3mm ID as this just pushes straight onto all of the solenoids (oh and I bought 2 new "T" pieces from the local dealership). Cleared the error codes and car was back to as it should be.
 

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Think I've cracked it this morning. Found a split rubber connector on the turbo actuator. Wrapped it in gorilla tape and power is restored. Must have missed it when first checking all vac pipes (this was right at the beginning before the code reader threw up the crank/cam sensor faults).
My guess is when I removed all the vac pipes I disturbed the split connector. After replacing the crank sensor the initial fault was sorted but I'd caused further damage to connector, hence the boost issue.
Anyway, all good now so happy days... Till next time! Think I might replace all the vac pipes and connectors as a preventative measure.
 
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