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Welcome to the club, John.

It appears that you are having a problem with your EGR valves.

A quick solution is a Millers Additive to your engine -- Diesel Power Eco Max.

I am assuming that your car is a 3litre Diesel   If so, there are two EGR Valves.

Let me know how you get on.

Regards,

Peter.

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Hi

I would ensure battry is fully charged. Low voltage events are well known to corrupt the software which could be the cause. Was the garage where you had the work done a Jag dealer?

Regards

John

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Hi John,

I forgot to ask one question. I should have asked you is the fault giving a problem with the engine --  poor performance etc. Or is there a warning such as "Restricted Performance" ?

I don't think disconnecting the battery would help at all.

I had an issue with my S type when the Message was "Gearbox Fault" and "Restricted Performance".  My mechanic, who has been looking after my cars for 19 years, asked the question about car performance which was still perfect and his thoughts were "if the car was not performing well it looks like a big problem, but if it is performing well if could be that an old issue [I had used the manual gear system too much] is letting the OBD2 reader bring back the codes.  The codes just needed erasing.  I have a cheap OBD2 code reader which erased the codes.

What you have had done seems to be the correct thing to do, but has it been done properly.  If they erase the codes for you, the car should not give out the details of an old issue.

Regards,

Peter.   

 

 

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Hi yeah can run fine with the engine management light on and the mpg are good up in the late 55mpg on a run . Yeah they clear the codes but come back on after driving 20 odd  miles and more .think it worth getting a fault reader and clearing in myself ? Many thanks john

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  • 4 months later...
  • 4 weeks later...

Hi, I had multiple engine, anti lock  brakes,  gearbox faults showing. My guy  found that a low battery charge was the problem.  Replaced and all sorted

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