Jx6,x300 erro Cod P1621p1621

Repair your vehicle right away. Just click on the link I attached 1995 jaguar x300

under the left hand front wheel arch area,

when you say turbo has someone fitted a aftermarket turbocharger ?or is it a xjr with supercharger? what model is it ? xj40 or x300, the only connection with the throttle pedal I can think of is the cruise control or the gearbox kickdown cable. all the xj40,s had a kick down cable, the 3.2 x300, also. the 4.0l x300 was electronic. start by checking the throttle cable, pedal, and throttle body. if it has a kick down cable try car with cable disconnected.this sounds a strange one, love to drive it have been a jag tech for 40 years

i assume your car is@1997 a model/year x300 a common cause of the symptom you have is a corroded/open circuit wiring at a connector or around under the washer bottle filler white connector i think its the ok to start signal from the security/locking module located below trunk fuse box the module can also go faulty. one easy test is to switch ign on if the check engine light goes off with other warning lights. start there fault finding with the wiring etc

crank relay on the front pulley or ignition module under the coil ,it has to one or the other

You will have to find a Jag specialist who has a facility to read the fault codes on the E.C.U.

68-88nm Steel Wheel 88-102nm Alloy Wheel Figures represented as printed in manual.
--- This is for Jaguar XJ12, Also badged Double Six - sure its the exact same car, its built 1997-1997 its a 6 Litre V12,

does it have a spark at the spark plug leads? if no it sounds like the crank shaft sensor!!

have the distributor cap checked or get a minor tune up, that worked for me

Hi t  need to read the codes for the light, might be anything