Diesel Diagnostics

Post a Response

Hyundai Tucson 2.0 CRDi D4EA 2004 - Code P0340 Intermittent non start, cuts out when hot - Fixed #

Posted by Jason Byrom on April 1, 2014, 2:44 pm

Year of Manufacture *: 2004ish (euro 3)
Engine Size and Code *: 2.0CRDI D4EA
( Optional ) ECU Type: Edc 15
( Optional ) Scanner Used: KTS and Launch
( Optional) Fault Codes: p0340

Hi all,

Yet another P0340 Cam to Crank Code, also could mean a failed Cam sensor?

Intermittent non start and cuts out when hot, scoped Cam to crank and seem to be getting a healthy signal from both even when it doesn't start and to me both seem to match up ok.... Here is the scope screen when to car is running... Any ideas?

Many Thanks

Re: Hyundai Tucson P0340 Hot Starting/cutting out Fault

Posted by Fiachra Purcell <iframe src='https://members.boardhost.com/ukautotalk8/info/user=ukat3006' width='330' height='300' border=0 style='border:none;'> on April 1, 2014, 5:53 pm, in reply to "Hyundai Tucson P0340 Hot Starting/cutting out Fault"
Fiachra Purcell

Hi Jason.
Let me start with a disclaimer as I'm no scope expert.
Looking at your cam signal it's being pulled from 0v to roughly -4.5v.
I've never seen a negative voltage from a hall sensor. I would expect to see it going from 0v to +5v. where was your earth attached to?
I also would not expect to see the crank signal reflected in the cam sensor signal (possible bad earth connection).
I'm sure someone more knowledgeable will comment soon.
HTH.
Fiachra

Re: Hyundai Tucson P0340 Hot Starting/cutting out Fault

Posted by Graeme Simm <iframe src='https://members.boardhost.com/ukautotalk8/info/user=UKAT5327' width='330' height='300' border=0 style='border:none;'> on April 2, 2014, 12:08 am, in reply to "Hyundai Tucson P0340 Hot Starting/cutting out Fault"

Have no idea if this would help, I just had a similar problem and it kept throwing in the same fault code, I scoped the signal right to the PCM (behind the dash)eventually it was traced to a bad connection on the PCM multi plug, the hot start throws me off a little but you would still see a crank sensor signal even if the PCM is not receiving it.
give the connectors on the multi plug a yank while it is running, see if it stops or if it will not start.
might be miles away but it may help, crank sensors are really common as well and cheap.

Re: Hyundai Tucson P0340 Hot Starting/cutting out Fault

Posted by Jason Byrom <iframe src='https://members.boardhost.com/ukautotalk8/info/user=ukat3592' width='330' height='300' border=0 style='border:none;'> on April 8, 2014, 10:08 am, in reply to "Re: Hyundai Tucson P0340 Hot Starting/cutting out Fault"

My scope skills are still pretty rubbish!

Thanks for the advice on the ECM multi plug, I gave it a wiggle and it didn't cut out, but as soon as I started to drive it would cut out.

I then removed the ECM multi plug, sprayed it with some contact cleaner and bingo.... perfect.... until I gave it back to the customer, drove ok for a day the started cutting out/non start.

And had come back with these two fault cods

P0403 EGR
p0340 Cam to Crank

A new genuine Cam sensor has been fitted, EGR has been removed cleaned and Mity Vaced and vacuam pipes checked. Good Crank signal when Non start, you can even see the rev counter move! Intake flap checked, smoke tested inlet system.

Fixed #

Posted by Jason Byrom on April 16, 2014, 3:39 pm, in reply to "Hyundai Tucson 2.0 CRDi D4EA 2004 - Code P0340 Intermittent non start, cuts out when hot #"
Edited by board administrator April 17, 2014, 2:52 pm

Drove it on a long test drive until it cut out..... Would not start for a good 10mins and found to have no RPM signal. (Replaced crank sensor)

« Back to index

[ Diesel Diagnostics ]