S Type 2.7 D Engine cut out

[Geoff 215706]

Hi I appear to have a strange fault with my S Type V6 Diesel . It starts absolutely fine Get anywhere between 1/2 a mile to mile down and the engine just cuts out and I get a DSC fault and Park brake fault and grinds to a  hault . Restart the car and it will run with out fault for the rest of the day. It’s weird the fault code says loss of communication. Apart from a safety point of view it’s just very irritating. Any Ideas 

[Guest]

Hi Geoff and Welcome to the Club,

I have not heard of this one before but hopefully others have and can provide more specific help. It will help if you could provide the DTC code and the specific message text?

Given that you're getting a DSC warning light, and Parking Brake light(?) I would be looking at the back axle area first and the Wheel Speed Sensors and Cables would be my first port of call before moving on to other parts.

Keep us posted.

Steve

 

[Geoff 215706]

Thanks Steve for your response. Not sure if the fault light disco is because the engine has cut out first then throwing up the faults . It’s not done it once while the engine is up to temp or even after being parked at work for 4 hrs plus it’s always the first cold start of the day. Then doesn’t show up again all day . The problem is it’s Auto and loose my brakes and power steering it’s a bit squeaky bum time to be honest.

[Guest]

Hi Again Geoff,

I suggest you either take the car to an independent Jaguar mechanic in your area as soon as possible or alternatively put out a call to members of this forum who live near to you and have access to an OBD2 code scanner - they may be willing to meet up with you to check the car over.

I am thinking that the DSC and Park Brake faults are symptoms rather than root cause ailment. I am far from sure but it could be that the ECU is losing contact with its sensors and/or some of the other controllers and is simply shutting the engine down. If I am right this could be due to a damaged CANBUS wire or connection or even a failure of the ECU itself.

Given the safety angle, yours and other road users, you should get a scanner on the car asap.

Cheers,

Steve