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Author Topic: P0201 code driving me mad.  (Read 809 times)

Offline HARRYS GRANDAD

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  • Model: Galaxy Mk3
  • Spec: 58 1.8TDCI125Zetec
  • First Name: Peter
  • Region: North East
  • Country: United Kingdom
P0201 code driving me mad.
« on: November 12, 2018, 06:18:00 PM »
I have a galaxy mk 3 1.8tdci 2008.
Back in May I was in outside lane of M1 near Toddington service when engine malfunction came on along with the skidding car light on dash went into limp mode (scary to say the least). Managed to get to inside lane and limped to next junction to get off motorway, stopped for about 30 mins then started car fault appeared to be cleared and off we went for about 100 miles then same again.
This has been going on and off ever since. Bit the bullet and got a new injector fitted mid October, great for about 100 miles then engine malfunction code P0201 again. Had auto electrician out but could not identify any problems. Faults cleared ran car for a week and here we go engine malfunction limp mode code P0201 so auto electrician back out and again could not replicate the problem so suggested swap no 1 injector with no 2. If fault appears as P0201 possible pcm problem if fault follows injector and comes up P0202 then injector faulty.
Well P0202 appeared so injector problem? Garage replaced the new injector under warranty with another new injector that was Friday afternoon, Saturday afternoon after a 30 mile journey engine malfunction limp mode. Got home put Forscan on fault code P0202, fault would not clear. Took back to garage today Monday he swapped injectors back so new injector no2 into No1 and off old injector no1 into no 2. Fault came back P0201.
The fault appears to follow the new injector which suggests faulty injector but of cause the injector suppliers are not convinced. Garage is getting a bit awkward ''can't keep replacing injectors'' ''could be a harness problem?'' If it was the harness logic tells me it would not follow the injector or would it?
Any advise would be gratefully appreciated.  :(

Offline mike wilson

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  • Spec: mondeo mkIV 1.8
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Re: P0201 code driving me mad.
« Reply #1 on: November 13, 2018, 01:10:53 PM »
There are numerous issues that could be causing this.  The following is a non-exhaustive list:
injector fault(s)
fuel line air leaks
turbo actuator issues
turbo hose integrity
throttle position sensor
any of the multiple engine sensors
wiring harness corrosion
EGR faults

Fault codes don't seem to help, nor does wholesale replacement of parts.

Mine seems to occur at the beginning of overrun when changing gears.  But not reproducible .  I have become adept at switching off and on (don't take it out of gear) which rectifies it immediately for another indeterminate period.  It seems to occur in clumps (sometimes three or four times in a 200 mile journey - heat related?) as much as in solitary situations.  If you work out what it is, there are many owners who would be glad to hear it.

p.s. If not done already, you need to sort out your cambelts as a matter of urgency.  Two belts, one inside the lower timing chest, and many additional items to replace.

Offline HARRYS GRANDAD

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  • Model: Galaxy Mk3
  • Spec: 58 1.8TDCI125Zetec
  • First Name: Peter
  • Region: North East
  • Country: United Kingdom
Re: P0201 code driving me mad.
« Reply #2 on: November 13, 2018, 01:37:25 PM »
Thanks Mike.
More things to look at.
But the thing I cannot get my head around is the fault code moves with the replacement injector.
Cambelts done in June.

Offline mike wilson

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Re: P0201 code driving me mad.
« Reply #3 on: November 15, 2018, 09:56:06 AM »
I don't understand how that works.  I can't see any way of sensing if an injector is faulty.  There are only two wires into it - unless one is signal and the other is some sort of monitor, earth being through the body?  There must be something because some of the diagnostic softwares allow you to view how much each cylinder is "working".

Offline johnnyroper

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  • Model: Galaxy Mk2
  • Spec: 02 tdi 115 ghia
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  • Country: United Kingdom
Re: P0201 code driving me mad.
« Reply #4 on: November 15, 2018, 03:36:38 PM »
Modern Diesel engines detect injector operation by how fast the crank rotates after the firing stroke for any given cylinder in Simple terms,it then increases or decreases fuelling to achieve even firing across all cylinders.

Fault codes for injectors are generated by the resistance across the coil,power and earth come via ecu and the software is programmed to flag injector faults if resistance falls outside of the parameters.

Offline johnnyroper

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Re: P0201 code driving me mad.
« Reply #5 on: November 15, 2018, 04:29:14 PM »
Also if the cylinder is not performing properly and fuelling needs to be adjusted so much it goes out of correction parameters a fault code will be logged.

Offline HARRYS GRANDAD

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  • First Name: Peter
  • Region: North East
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Re: P0201 code driving me mad.
« Reply #6 on: November 17, 2018, 10:47:36 PM »
I have had the injector replaced this will be the third one. Up to now it appears to have solved the problem.  :)

Offline mike wilson

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Re: P0201 code driving me mad.
« Reply #7 on: November 20, 2018, 09:07:25 AM »
Were you using new/reconditioned/or what? injectors?  Where did you get them from and how much?  I'm thinking of sending my old set for recon.

Offline HARRYS GRANDAD

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Re: P0201 code driving me mad.
« Reply #8 on: November 20, 2018, 05:00:30 PM »
Hi Mike
Don't know which, he gets them from his supplier, but I was charged 200. Cost of injector plus 20 mins fitting.

Offline johnnyroper

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Re: P0201 code driving me mad.
« Reply #9 on: November 20, 2018, 11:43:05 PM »
I take it the injectors are coded in properly when changed aswell?

Offline HARRYS GRANDAD

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  • First Name: Peter
  • Region: North East
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Re: P0201 code driving me mad.
« Reply #10 on: November 21, 2018, 12:15:43 AM »
Yes he coded the injector after fitting. Up to now working well just the water problem to sort. Hopefully.

Offline mike wilson

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Re: P0201 code driving me mad.
« Reply #11 on: November 21, 2018, 08:16:28 AM »
My understanding is that you don't need to code injectors after about August 2007.  Do your injectors have a label with a long number and barcode on?  I just wacked a set of injectors in off a scrappie - no issues (apart from what this thread is about, which was there before) and a 10mpg improvement.  My feeling (and it's only that) is that my issue is related to the turbo vanes.  I really need to get the Mr Muscle out.

Looked under the bonnet during this morning's hailstorm (Thank you, mike.  You're welcome.) and my hose runs from the thermostat housing down to the bottom of the radiator on the passenger side.  Not sure what issues having the radiator plumbed the "wrong" way will cause in a pumped system.  At least it will have had a solid backflush.

Offline mike wilson

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Re: P0201 code driving me mad.
« Reply #12 on: November 21, 2018, 08:26:34 AM »
Replying to an earlier post (I can't quote for some reason) the injectors on the post 2007 1.8 are piezo and, as far as I know, do not have a coil.  They are capable of multiple pulses per cycle and this is one of the routes to improved mpg and emissions conformity.  This contradicts what I have read/been told about an known issue with early (up to August 2008) injectors which, apparently, short circuit between the coil and body at high temperatures.  When new, there is a small, metallised sticker on the body below the plastic cap with a number ending in three which identifies the faulty ones.  Later ones have a serial ending in four.  Have a look on ebay and see how many of these injectors have any sticker on at all....

Offline HARRYS GRANDAD

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  • Model: Galaxy Mk3
  • Spec: 58 1.8TDCI125Zetec
  • First Name: Peter
  • Region: North East
  • Country: United Kingdom
Re: P0201 code driving me mad.
« Reply #13 on: November 21, 2018, 10:54:35 AM »
I have looked at the new injector it has a number around the side of the "cap" A2C59511610 which is the same as my no 4 injector which was changed when I bought the car 4 years ago.
With reference to codeing I was in the car after he put the 2nd new one in and he plugged his diagnostic machine in and did a variety of things, is that what coding is I don't know.
Sorry about you getting wet this morning Mike but greatly appreciated.

Offline HARRYS GRANDAD

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  • Model: Galaxy Mk3
  • Spec: 58 1.8TDCI125Zetec
  • First Name: Peter
  • Region: North East
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Re: P0201 code driving me mad.
« Reply #14 on: November 21, 2018, 11:07:36 AM »
Just out of interest I have looked up that injector code and found this site
https://www.pfjones.co.uk/ford-mondeo-1.8-tdci-2007-2014-new-siemens-vdo-diesel-injector-a2c59511610.html
Price looks to be about what my mechanic would have paid as he only charged me 200.
Also it says no coding required so don't know what he did with his diagnostic machine.

Offline mike wilson

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Re: P0201 code driving me mad.
« Reply #15 on: November 22, 2018, 08:37:21 AM »
And if you look on that page, it clearly states "no coding required". 

These Delphi injectors https://www.pfjones.co.uk/ford-mondeo-2.0-tdci-03-2010-12-2014-new-delphi-diesel-injector-r00101dp.html  found on the 2litre and above and on older than 2007 vehicles are the ones that require coding - there's usually a metallised sticker running along it with both a bar code and number.

Offline mike wilson

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Re: P0201 code driving me mad.
« Reply #16 on: November 22, 2018, 08:40:35 AM »
Seem to have lost the ability to edit as well.  First sentence should have carried on "therefore he can only have been checking functionality."

 

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