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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