lots of stuff on our 350 R at the moment, we have been geeting the engine management light come on, a battery disconnect and reconnect would put it out for a while, but within a few hours, days, weeks there was no pattern it would come back on, however after reconnection it would never come back on while the car was stationary with revs on or on tickover, drive it and at some point it would reappear
while having out handbrake issue attended to at Prestige Jaguar Paisley, the scan showed "lean bank one and two", Dougie reset the car but could find nothing obvious, although we both felt the idle was a tiny bit lumpy, and sent us on our way with a caveat "it will soon come on again". well it did, 800 yards away!!, so straight back, disturb the guys lunch, but all credit they were straight back on it more poking , proding, sucking of teeth , but finally the fault was located, the vacum pipe to the throttle body hidden deep under the egine cover and s/charger had come off, this was reattached and cable tied for good measure, and off we went, perfect no faults since, and the car DOES run better