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[marshall76]

Morning,

New to the site having recently purchased Vauxhall Omega.

Just to give you bit of background on car - Bought the car in June  (Y Reg 2.2 Auto CD) from family member, it's done  93.000 miles.gine

Been running the car since I bought it in June with no trouble at all drives perfect, then last week while driving the spanner/car light came on and went into limp mode, pulled over and restarted and the light went out but now the EML is on constantly, the car still drives perfect but with the EML light being on I thought I best get it checked out.

Booked it into an Auto Electrician this morning and it came back with the following codes  which I could really use some help with please;

P0700
P1625 - Internal Power Control Final Stage Low input.

I'm not technically minded so have no idea where to look and don't want to be spending loads on stuff that won't cure it.

Thanks in advance for any help.

[TheBoy]

P0700 in engine ecu, and P1625 in TCM?

If so, I'd be guessing a solenoid failure in gearbox.

[marshall76]

Thanks for the reply, are these easy to put right or is it a case of taking the gear box aprt to replace, do you think this is linked to both the codes coming up?

Apologies for been a bit Forest Gump but I'm really not technicaly minded in this sort of stuff.

thanks again

[RobG]

Rear of battery tray are 3 large circular connectors. Ensure the blue one is firmly connected (they`re push & twist lock)

[marshall76]

Rear of battery tray are 3 large circular connectors. Ensure the blue one is firmly connected (they`re push & twist lock)

Just been out to take a look all 3 are firmly in place. thanks
 
As previously mentioned the car drives spot on, gear box seems fine, just annoying that it's brought up these faultsd EML light is on constantly, I only drive a short distance to work each day but do take a trip to see the folks in scarborough now and again but its really put me off doing long journeys now.

[RobG]

P0700 in engine ecu, and P1625 in TCM?

If so, I'd be guessing a solenoid failure in gearbox.

0700 is just a request from autobox to illuminate MIL.  All I can find on 1625 relates to an electrical short (to ECU maybe???).
Short to voltage in circuit to control unit terminal 52, 5

[marshall76]

Thanks for replying, I've tired searching all morning on the P1625 code but couldn't really find anything that would give me any idea what to change/check first only the electrical short on ECU (possibly) RobG mentioned.

With regards to the P0700 fault I'm still in the dark as to why it's throwing up this request to the MIL, I will mention the Solenoid to the mechanic but apart from that I've no idea where to start or really what to tell the garage to look for first.

The guy who read it on the machine this morning thought he would be able to take the light off but was unable to clear it, the car/spanner light cleared once I'd turned the engine off and on again and touch wood hasn't gone into limp home since.

Any other ideas would be very much appriciated please.

Thanks

[RobG]

With regards to the P0700 fault I'm still in the dark as to why it's throwing up this request to the MIL

Because of the P1625 detected. Any "fault" detected regards the autobox will always throw an 0700 + whatever code

thought he would be able to take the light off but was unable to clear it, the car/spanner light cleared

What light is still illuminated, "spanner" or "engine" or none now?

the Solenoid

Nothing to do with it

[TheBoy]

P0700 in engine ecu, and P1625 in TCM?

If so, I'd be guessing a solenoid failure in gearbox.

0700 is just a request from autobox to illuminate MIL.  All I can find on 1625 relates to an electrical short (to ECU maybe???).
Short to voltage in circuit to control unit terminal 52, 5

There are 3 different codes for P1625. So not necessarily a short. Could be open circuit as well.

[TheBoy]

the Solenoid

Nothing to do with it

Really , Nothing to do with the pressure control solenoid then?

[marshall76]

Oh I see now, so the P1625 is linked an Autobox fault which in turn throws up the P0700 code when any fault around the box is detected.

With regards to the lights, the "spanner" light initialy came on when driving then went into limp mode, after pulling over and turning the car off and on a few times it cleared the limp mode and the "spanner" light went off but the "engine" light then came on and has been on constantly since but hasn't gone into limp mode since, like I say the car itself drives lovely doesn't miss a beat.

Is the pressure control solenoid within the gear box itself and is it an expensive job to fix?

Appriciate the comments thanks.

[TheBoy]

Is the pressure control solenoid within the gear box itself and is it an expensive job to fix?

Yes.

I imagine it needs the front sump to come off to get too, so the ATF oil change guide will give you some idea. May as well do a full ATF change whilst there, IMHO.

If you are handy with a meter, worth checking continuity of wiring from ECU to gearbox, and ensure not earth out anywhere etc, and then measuring the resistance of the pins going into box towards the solenoid, just to be certain.

As to cost, well, you're looking at £50 for ATF if you do a full fluid change (bet the stuff in there is original), not sure how much solenoids are.  Or change the entire gearbox - breakers here often sell AR35 for £70-£100, bet AR25 is cheaper, as usually a throwaway item. Expensive to post, though. Awkward to change as well.

[TheBoy]

Ah shucks, just seen you are using a garage.

In this case, I would seriously consider checking if one of OOF's mechanics is prepared to look at it for you - they understand the car better than garages, and will be much cheaper.

My geography is piss-poor, but Barnsley, I'd say either Elite Pete or Darth Loo-knee may be you best bets, although accept either is a bit of a drive. Worth it though, honestly

[marshall76]

Thanks very much for the reply, to be honest I would rather use someone who know's omega's inside out so doesn't have to be a garage.

I will have the continuity checked out first but if this is ok I'll have a think and come back to you on this to see if someone on here could take a look.

I'm orginally from Scarborough and quite new to Barnsley so the father in laws kind of taken over a bit saying he's knows a man who knows a man ect...but personally I'd prefer to go with someone who has worked on Omega's before and know's what there doing 

Really appriciate your help today with this and also RobG

[RobG]

the Solenoid

Nothing to do with it

Really , Nothing to do with the pressure control solenoid then?

P0748

[RobG]

P0700 in engine ecu, and P1625 in TCM?

If so, I'd be guessing a solenoid failure in gearbox.

0700 is just a request from autobox to illuminate MIL.  All I can find on 1625 relates to an electrical short (to ECU maybe???).
Short to voltage in circuit to control unit terminal 52, 5

There are 3 different codes for P1625. So not necessarily a short. Could be open circuit as well.

TIS states
Final stage diagnosis in control unit
Short to voltage in circuit to control unit terminal 52, 5
Above condition must be fulfilled for at least 0.02 s .
Effect:

"Emergency Mode" is activated
The malfunction indication is switched on.
Concerned Terminals:
52, 5
 

[TheBoy]

the Solenoid

Nothing to do with it

Really , Nothing to do with the pressure control solenoid then?

P0748

Eh?

[TheBoy]

P0700 in engine ecu, and P1625 in TCM?

If so, I'd be guessing a solenoid failure in gearbox.

0700 is just a request from autobox to illuminate MIL.  All I can find on 1625 relates to an electrical short (to ECU maybe???).
Short to voltage in circuit to control unit terminal 52, 5

There are 3 different codes for P1625. So not necessarily a short. Could be open circuit as well.

TIS states
Final stage diagnosis in control unit
Short to voltage in circuit to control unit terminal 52, 5
Above condition must be fulfilled for at least 0.02 s .
Effect:

"Emergency Mode" is activated
The malfunction indication is switched on.
Concerned Terminals:
52, 5
 

Check the other 2 for P1625 as well

[RobG]

Oh I see now, so the P1625 is linked an Autobox fault which in turn throws up the P0700 code when any fault around the box is detected.

With regards to the lights, the "spanner" light initialy came on when driving then went into limp mode, after pulling over and turning the car off and on a few times it cleared the limp mode and the "spanner" light went off but the "engine" light then came on and has been on constantly since but hasn't gone into limp mode since, like I say the car itself drives lovely doesn't miss a beat.

Is the pressure control solenoid within the gear box itself and is it an expensive job to fix?

Appriciate the comments thanks.

Emissions

[RobG]

P0700 in engine ecu, and P1625 in TCM?

If so, I'd be guessing a solenoid failure in gearbox.

0700 is just a request from autobox to illuminate MIL.  All I can find on 1625 relates to an electrical short (to ECU maybe???).
Short to voltage in circuit to control unit terminal 52, 5

There are 3 different codes for P1625. So not necessarily a short. Could be open circuit as well.

TIS states
Final stage diagnosis in control unit
Short to voltage in circuit to control unit terminal 52, 5
Above condition must be fulfilled for at least 0.02 s .
Effect:

"Emergency Mode" is activated
The malfunction indication is switched on.
Concerned Terminals:
52, 5
 

Check the other 2 for P1625 as well

Can`t, no access

[TheBoy]

Relevant part of wiring diagram

[RobG]

Relevant part of wiring diagram

Double dutch to me

[TheBoy]

Relevant part of wiring diagram

Double dutch to me

Fault code implicates U10.3, or its wiring (going back to pins 52 and 5)

[RobG]

Fault code implicates U10.3, or its wiring (going back to pins 52 and 5)

[marshall76]

Thanks for the reply's guys,

Pigging me off even more today as the temp gauge has now decided to stop working, was working fine before this Auto Electrician started fiddling with stuff yesterday and after he'd read the codes.

Thought it might just be a dodgy fuse but after flicking through the manual I don't think there is a fuse for this is there?

Any ideas where to look please? I don't think anything was disconnected but he was under the bonnet for some time but I think that was to do with the oxygen sensor or something??!?!?!?!

[TheBoy]

Think 2.2 has same spade connector setup for the temp gauge as V6. Hopefully a 2.2 owner can say where it is

[RobG]

Rear of the head next to EGR valve. Pic is of the 2.0 so OP won`t have the dispack

[marshall76]

Thanks for replys and diagram, I'll need to get someone to take a look at it, I wouldn't know where to start to be honest. I've been out to take a look but not entirley sure what I'm meant to be doing.

Is it just the case of making sure the connector is in place on the dash board temp gauge sender or isn't corroded. He was fidling a bit round the back of the head - like I say I'm no mechanic what so ever so this is all new to me.

[marshall76]

Taking the car back to the Auto Electrician this week sometime,

I'm a bit torn now as to which direction to go with this either the gear box or electrical circuit or the emmisions now 

I've printed the wiring diagram off (which I havn't a clue where to start with this) but I'll give this to the guy who's taking a look and hopefully he can make sence of it.

If he doesn't come up with any solution I will probably go by "theboys" recomendation and take it to somebody off here to look at and get put right.

[marshall76]

Popped into see the Auto Electrician earlier this morning before work just to show him the wiring diagram and offer some ideas of what it might be, he basically disregarded everything I said about checking the continuity from Gearbox to ECU and every other thing I mentioned, I also mentioned emmisions and he said boll*cks it would come up with "emmisions" when I plugged the fault reader into it!?!? He was supposed to do some research too on the P1625 error but said he couldn't find a thing anywhere on it so think he was a bit put out that I had.
As the father in law has known this guy for years he wants me to book it in there for the day which I'm a bit dubious about doing I just bit my lip and said "Well your paying the bill then and make sure he fixes the temp gauge he knackered when he was fiddling last week".

Me personally I'd rather pay somebody on here who lives pretty local to the South Yorkshire area who knows what there doing to take a look because I havn't a clue where to start looking but I guess I'll see how this other guy gets on, think it's booked in Friday.

[TheBoy]

Good luck

[Marks DTM Calib]

If you can get it to south Nottingham on Friday evening I could have a look

[TheBoy]

If you can get it to south Nottingham on Friday evening I could have a look

marshall76 - this is a offer worth taking up before the garage look, trust me

[marshall76]

If you can get it to south Nottingham on Friday evening I could have a look

Morning, I would be quite interested in doing this but just want to check what would be involved first, could you e-mail me a contact number so we can disscuss further please marshall_760@hotmail.com

Cheers

Wayne

[marshall76]

I have also been mentioning this to a couple of my customers at work just generally chatting - someone mentioned they had the same problem I had and it was there oxygen sensor on exhaust.

I mentioned it had happended twice over past couple of months and always seemed to be after kick down (the spanner light then comes on and goes into limp mode then once restarted a couple of times the spanner light goes out and EML comes on constanly but no longer in limp mode )

I would have thought this would have brought a code up relavant to the oxygen sensor though mine just says P1625 - NB Internal Power Control Final Stage Low Input

Just thought I'd mention it though to see what other people thought.

thanks

Wayne

[Shackeng]

If you can get it to south Nottingham on Friday evening I could have a look

marshall76 - this is a offer worth taking up before the garage look, trust me

Repeat: I would seriously advise taking this option.

[marshall76]

Just to give a bit of an update, managed to sort the faulty temp gauge out, the spade connector had come loose so it was an easy fix.

With regards to the codes P1625 & P0700, I asked to meet MArkDTM's in Nottingham but never got any reply back but appriciated the offer anyhow thanks.

I've had these read again by another auto electrician who works alot with vauxhalls, he seems to think it's the lamber sensor and also the gearbox selector switch 

Still a bit dubious with these findings though the gear box seems spot on though everything works as it should on it, the car itself drives A1.

I think I will replace the lamber sensor, vauxhall have quoted me £93.00 and by the looks of the one that's on at moment it doesn't look to be a genuine part, not too sure what the lamber sensor actually does or effects if faulty either if someone could tell me please?

I still have the engine light on the dash but "touch wood" it hasn't gone into limp mode since reporting the fault last month.

Any other ideas help would be very much appriciated

Cheers

Wayne

[albitz]

Send Mr DTM  a PM again.He may well have been busy,but tis well worth taking up his offer.He will have forgotten more about Omegas than the people your talking to are ever likely to know.

[marshall76]

Morning,

Just when I thought all was going well  , the car decided to break down on the way to work this morning, it just wouldn't come out of limp mode and even in limp mode it wouldn't work in any of the autobox settings just revved alot in 1,2,3 and D.

Green Flag came out and read the codes P1625 & P0700 (I didn't tell him the engine light had been on for about a month now and that I'd had the codes read already) took the engine light off and restarted car all seemed ok sport button worked no limp mode or anything, brilliant I thought, but no as soon as I put it into drive nothing happend the car just revved and wouldn't budge just rolled backwards down this stupid hill, in the end I had to get towed home

Got it home and noticed spanner light was on again, switched off and on again spanner light went out and now got the engine light on constant just like previously, car drives in every gear as it should (only went up and down drive way don't really want to drive it until completely fixed now) which was a bit of a relief as I thought the gearbox was totally gone.

Mr Green Flag mentioned it would more than likely be the gearbox selector switch which someone else has mentioned to me, my question is are these expensive and where abouts on the gearbox are they located?? does the gearbox need to be lowered off the car ect...any help would be greatly appriciated please with regards to this and costs ect...

Thanks

Wayne

[Andy B]

....

Mr Green Flag mentioned it would more than likely be the gearbox selector switch which someone else has mentioned to me, my question is are these expensive and where abouts on the gearbox are they located?? does the gearbox need to be lowered off the car ect...any help would be greatly appriciated please with regards to this and costs ect...

Thanks

Wayne

Here you go!  http://www.omegaowners.com/forum/index.php?topic=90673.0

[marshall76]

Morning,
Just to give a bit of an update and plead for some help. Car was booked in yesterday for the gear selector switch changing (the part wasn't brand new and was second hand), recieved a call from the garage saying that even after fitting this part the car still wouldn't drive in any gear only 1st (auto box) any other gear it just revs and doesn't budge same as before.

My problem now is could this have been a faulty second hand switch (I was told it was from a working omega) or could it be something else??

The garage told me I'd be looking at BIG money for them to check wiring, ecu ect...which I don't have.

So now I'm basically left with a car that won't drive, my father in law has very kindly offered to look for a cheap run around for me to tide me over until I can save enough for something better and has advised me to scrap the omega even though apart from the gearbox issue is in A1 condition and I love the car and would be gutted to see it go.

If any one can give me any ideas where to look or has had similar problems where the gear box just revs and won't engage gear I'd appriciate so advise, the car starts fine not in limp mode or anything the EML is on but it seems to drive in every gear up and down the drive way yet as soon as I get onto an open road it just goes back to revving   

Fault codes read are P0700 & P1625

I have e-mailed MARKDTM for some advise and asked him to ring me if possible if he has any ideas so fingers crossed.

Many thanks for reading and for any help given

Wayne

[Kevin Wood]

Why are we worrying about the selector switch? P1625 is quite specific that the fault is on the circuit between pins 52 and 5 of the automatic transmission ECU which feed the Solenoid Valve - Hydraulic Pressure Regulator.

The fact that it won't now drive manually in limp-home mode might indicate a more serious mechanical problem with the gearbox, IMHO, but the first action should be to check the wiring to the solenoid and, if sound, the solenoid itself.

I can categorically state that it won't be a lambda sensor or the selector switch. Believe the fault codes, not Green Flag.

[marshall76]

Morning,

I've come to the desicion that I just can't afford to spend anymore money on the car as much as would like to.

I will be putting the car up for sale as it's far too good to just scrap, if I wanted to advertise it on here who would I need to speak to please as I don't think I have enough posts to submit anything in the for sale section.

Thanks

[Kevin Wood]

Apologies, but unfortunately the requirement for 250 posts before advertising here is not negotiable. We've had too many problems with sellers who join just to get shot of a car so now we require members to be well established before selling.

I wouldn't give up on it yet, personally. It probably only needs the front sump on the auto box dropped to access the solenoid and it may even be a simple wiring issue.