Hi everyone - seeking advice. I was driving my 2011 XKR earlier today and when I came to a stop sign, the engine just cut out - this has happened a few times over the last few months. I then went out later in the day, and the same thing happened. I just re-started the car again, and then whenever I came to a stop, the engine would start idling very low and the gear selector kept flashing D - I was able to put it into N and then D, and I could then accelerate again, but the car was very "jumpy" - this happened about 5 times, and the idle seems inconsistent. I have an icarsoft tool, and the following codes were displayed:

P010B Mass or current air flow B circuit - range/performance

P0500 Vehicle speed sensor A / Vehicle speed sensor circuit malfunction

B100A Fuel pump authorisation

U0415 Invalid data received from ABS control unit

U2005 Vehicle speed

U1A24 MOST ring complete. no communication

U0140 Lost communication with body control unit

Any ideas on what is wrong with the car - I was thinking it had something to do with the throttlebody or fuel/air mixture ?

Thanks in advance,

Joe

 

I suggest that you download the 5.0L XK Workshop Manual and Electrical Guide in the sticky at the top of this Forum home page for troubleshooting advice.

 

+1 with Stuart S.
At the outset though, it seems to point to an ECM communication issue. If others have had the same or similar issues, perhaps they'll chime in.

 

Precisely right. Been there, done that with loosened connectors and modules in the past.
But I’m lazy. With so many codes I’d call a flat bed.

 

Time to book it in to a good indy garage. update us please

 

I'd write down the codes and then erase them to see if the same codes came back the next time.
Start checking connectors.
Batttery ok? Alternator ok? You can get some weird symtoms with low voltage.

 

+1

Always. Out-of-range signals happen all the time. No reason to jump to the conclusion a particular DTC is a permanent fault before checking for repeatability.

Graham

 

Thanks for all the advice guys. Car is now in the garage - I'll let you know what they say.

 

Quick update for you - and I must admit, I'm fairly embarrassed about not looking properly to see the problem (a case of not having enough time)!!! So, the reason it was behaving strangely was that one of the air intakes (that eventually go to the throttle body) had worked it way loose - so fortunately a very easy and cheap fix :-)

 

And we appreciate the comeback on the resolution. Too many times folks just seem to disappear after asking for assistance so we never find out what happened.