hi can any one help my 2001 306 hdi cuts out after about 5 mins of driving
i have changed the pump in the tank the fuel pump relay the fuel pressure
reg on the rail and it is still the same can any one help before i scrap it and buy a lada
thanks
Edited by Webmaster on 17/05/2008 at 13:50
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hi it keeps saying on the com fuel pressure sensor but i have changed
it thanks
Edited by Dynamic Dave on 08/10/2007 at 22:36
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This needs it's own thread
What's the code number? Bosch or Siemens?
In its own thread now - sorry missed it in the initial read-through.
Edited by Pugugly {P} on 08/10/2007 at 20:48
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madwelder
P0230 makes it a Bosch system and is "Fuel pump relay circuit - unspecified malfunction." Does this code keep returning after clearing?
There is no separate fuel pump relay; was it the combined relay on the ECU carrier that you changed.
Have you checked the inertia switch and it's connexions and the soundness of the earth on the pump?
After it stops; how do you get it going again?
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changed the brown relay at the side of the ecu if you clear it it is ok for a round 10 mins
all the wire seem ok thanks
Edited by Dynamic Dave on 08/10/2007 at 22:36
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i get it going by leaving it for 1min then it starts
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I'll take a stab that this could be a, very rare, immobilizer module fault; or the terminals in that combo relay's plug are not making good contact.
Check the voltage on wire code 822A on pin 3 of that combo relay; once running it should stay over 12v.
That P0230 is not a common HDi fault-code; it's the ECU saying that the current-flow on the FPR switching circuit is below minimum value.
As you've already done the relay, all that's left is a circuit fault.
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would you run a new live into the relay and a earth
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hi again it also runs on when you turn it off for a few secs
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madwelder
Check that voltage first; messing with monitored security circuits has unpredictable consequences.
Running-on is a much more common HDi fault; the ECU will not cut the engine until the fuel pressure has decayed to a safe level. [Are you sure you're not getting P1112 or P1138? They are both common cut-out causing codes.]
Either the rail-pressure sensor tells it there's [phantom] pressure remaining, or the pressure regulator sticks and doesn't release the pressure on command.
The first one needs a new rail-pressure sensor and modded cable; the second needs stopping using supermarket fuel - they hate it.
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already changed the sensor and not using supermarket fuel could it be hp pump or the ecu thanks andy
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Did you fit the modified cable with the new sensor? You mentioned "new reg" in the first post? It was definitely the sensor you changed - where did it come from?
The whole time-line is needed here; something's not making sense. You've got the common run-on; but without the codes and you've got the cutting out that usually accompanies it - but with an odd code for a relay circuit fault??
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hi again just fitted the sensor on the rail no cable it came from andrew page i will have the codes checked again in the morning to make sure but it came up with fuel pressure sensor p0230
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mw
What are you reading it with? Some scanners can't get past P1000.
Don't modify any wiring; it's all ECU monitored and the risk is that it'll either lock you out of the immob or it'll go into limp. Just watch that wire's voltage as it cuts-out.
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reading it with a snap on scaner
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hi the are P1112 and in eobd it os 0230 it is cutting the fuel relay off
thanks
Edited by Dynamic Dave on 09/10/2007 at 22:09
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hi the codes are P1112 or P1138 and 0230 in eobd
it is turning the pump relay off when running thanks
Edited by Dynamic Dave on 09/10/2007 at 22:08
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mw
This is like getting blood out of a stone.
Have you done any tests today?
What were those tests?
What test results did you find?
Which of those codes came up, in what state and when?
Sorry; but there are no cryptic replies when doing this work; every detail is needed.
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hi i had the scaner in it came up with the code P1112 and 0230 in eobd
checked all the wires all seem ok did a live data check
when driving it and the only one what changed was
the the fuel relay switched off no voltages changed on any
system it seems to happen when you let the power off then it goes into limp mode
take the code off drive ok for 3 mins then cuts out hope this helps
Edited by Dynamic Dave on 09/10/2007 at 22:08
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mw
I knew the relay switched off; that was what was setting the code. The next step was to find out why. That was the specific wire voltage test. Did you even check the relay plug's terminals?
P1112 is for a problem with the fuel-rail pressure sensor CIRCUIT. You've done the sensor [I wouldn't have used a pattern one; but...] so there's still a circuit problem.
What state was that code? Active? Memorized? Can the red brick do snapshots of data at code-set?
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checked the relay plug was all ok
the sensor was a gen, bosch one
i did a live data check when driving it
and did a recording and only the relay changed the voltages all stayed the same
even when reseting the code
Edited by Dynamic Dave on 09/10/2007 at 22:06
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mw
In that case, your scanner has reached it limits and your best bet is to take it to a diesel specialist for further in-depth investigation.
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hi thanks a lot for your help
Edited by Dynamic Dave on 10/10/2007 at 01:39
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madwelder, what is it with the a** comment at the end of all your posts? (that I keep on having to delete, otherwise they crop up when doing a forum search for words caught by the swear filter)
DD.
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Hi
Just found these postings whilst trying to bottom out similar problem with 306 HDI. Symptom car starts when quite cold but prone to either be difficult to start or completely fail to start after a run. Have changed fuel transfer pump - becasue it seemsed that fuel might be problem - and also fuels pump relay but the problem continues.
The ECU is throwing codes 230 and 1404 which I am told are Electric Shut of of ELAB (whatever that is) and something to do with the CU Output stage supply.
Have been AA rescued three times now. The last time got the car going with Ezystart
Did you get to the bottom of your problem? I was interested in the possibility of a immobilizer problem.
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rustybolt
P0230 is "Fuel pump relay - circuit malfunction." [Does it still prime when it won't go?]
P1404 is "Pre-heating/Additional heating; circuit 2 - error." [Not relevant to the problem.]
The codes could be a red herring; low rail pressure cranking would be my guess. [It won't fire under 120 bars.]
I'd do an individual leak-off test on the injectors - wouldn't be surprised to find one pouring out. Wear in the high-pressure pump can cause this too.
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I have the same problem - Any progress with diagnosis.
Sorry, I started a new thread with my similar problem. (HDi OBDII Code P0230)
www.honestjohn.co.uk/forum/post/index.htm?v=e&t=64...4
Is it an immobilizer problem or the more sinister high pressure pump/injector combination etc. ?
Please let us all know and how much it cost to fix. I am on the brink of visiting the dealer repair people.
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