Emission Service , Gear Pos Display Not Avail, Reduced Power

[EKing]

Pulled my DB9 out of the garage to run the engine for a little while (up to temp). I go to pull it back in and stop just about halfway to move my lift aside, so turned off the engine, move the lift aside, come back to start the engine. No engine start light, no gear selection light (P,N,R,D) and three messages show up on the display Emission System Service Required, Gear Pos Display Not Avail & Reduced Engine Perform. Any ideas would be welcome, I have changed the battery and performed the window, clock and seat resets, still the same messages?

[leman600]

Sorry to be very vague but take this advise as not completely knowledgable but in your position I would look in the handbook for a fuse for the gearbox ECU. If the car doesn't know what gear it is in it would surely override a fully working and happy engine giving you some kind of engine message (reduced power message). If you sat there with engine running emissions service may be triggered by that rich none typical situation.

[EKing]

Thank you for the advice, I will try that and see if it resolves at least the gear selection situation.

[Felonious]

My background is in Italian things... but if this was on a Ferrari or a Maserati I'd assume that the battery had the hump and most likely needs replacing. How long since you last used it (properly, not just running up to temp), have you had it on a trickle charger and how old is the battery?

Was there any particular reason you turned the car off just for a few minutes? My thinking is that the battery was tolerant of the first start but was all out of energy by the time you tried to start the car a second time

Of course, I could be barking up completely the wrong tree, but that's my £0.02'th.

[EKing]

I appreciate the feedback. I just installed a new battery and I keep on a tender.

[pschlute]

I would suggest starting up and running the engine but not driving the car is not actually good practice.

Either take it for a drive and give it some beans, or leave it cold for the winter months.

[leman600]

If you still have the old battery..... maybe a quick help in diagnosis. Recent history always key in diagnosis.

[EKing]

I will take that note forward for future. Thank you!

[EKing]

I do still have the old battery and I have kept that also on a tender.

[AMTony]

Had same messages on my db9.
Took it to Stratstones in Wilmslow and diagnosis was a faulty relay - was ok after replacement.
Fairly cheap resolution from memory.

[A-DBS]

EKing said:

Pulled my DB9 out of the garage to run the engine for a little while (up to temp). I go to pull it back in and stop just about halfway to move my lift aside, so turned off the engine, move the lift aside, come back to start the engine. No engine start light, no gear selection light (P,N,R,D) and three messages show up on the display Emission System Service Required, Gear Pos Display Not Avail & Reduced Engine Perform. Any ideas would be welcome, I have changed the battery and performed the window, clock and seat resets, still the same messages?

Had exactly same thing happening to me about a month ago on my DBSV. Tournd out to be a blown fuse in the fusebox under the passanger footwell. Can’t recal which one though. A red 10A one. After replacing the engine started but I still had the emissions service required message. Cleard that with a cheap OBD2 reader but it was comming back and engine was runing rugh on idle. Turned out too be a tube that had disconnected from the manifold.

Just sharing as you might have something similar. Worth checking out.

[EKing]

Thank you for the responses! I am in the US, so getting to Wilmslow could pose a problem lol..... I am from Manchester though! Thanks again!

[EKing]

So, in checking all the 10 amp fuses in the passenger side foot well fuse box, I was able to find the culprit and change it. It fixed the problem and I performed the "Emission System Service Required" code reset with the OBDII. Thank you again for the information!!