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Jaguar XJ Series Check Engine Light

13 messages,  Last post on Oct 13, 2009 at 7:36 PM

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What is this discussion about? Jaguar XJ-Series, Engine

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#5 of 13 Jag 99 XJ8 won't start by deadjag Jul 26, 2008 (1:04 pm)
I drove home in a bad electrical storm. Everything worked OK while driving. Next day I tried to startup. Dashlights, audio tones, and interior lights come on but engine just clicks. I get two system messages: 1) check engine and 2) stability control. Checked battery and have 11 volts -- seems OK. Also tried to jumpstart to no avail. I also turned traction control to 'off'. Still get same result -- just an electrical 'click' and 'check engine' message. Seems like I need to reset stability control or check engine in order to start. Any ideas out there? Replies to this message: euphonium (Jul 26, 2008 7:52 pm) deadjag (Jul 28, 2008 12:15 pm)
#6 of 13 Re: Jag 99 XJ8 won't start [deadjag] by euphonium Jul 26, 2008 (7:52 pm)
Replying to: deadjag (Jul 26, 2008 1:04 pm) No guarantees, but sometimes the computer can be reset by disconnecting the battery for 10 or 15 minutes. At least remove the Negative cable for awhile and see what happens. Good Luck. Replies to this message: deadjag (Jul 28, 2008 12:15 pm)
#7 of 13 Re: Jag 99 XJ8 won't start [euphonium] by deadjag Jul 28, 2008 (12:15 pm)
Replying to: euphonium (Jul 26, 2008 7:52 pm) Thanks euphonium. Tried this to no avail but I'll keep working on it. Do you think this is the best Jag maintenance forum or are there others which are more active?
#8 of 13 DTCs P1000, P1111, P1121 & P1642 by snakedoctor56 Apr 11, 2009 (7:59 am)
I have a '99 XJ8 with 106,000 miles. It has run fine with no problems until recently. I was in stop and go traffic and suddenly the car would not accellerate from a stop. The instrument warning dispayed "Engine in failsafe mode", "Transmission failure" and " Stability control inoperative". I had the vehicle towed home and checked the DTCs. They were P1000, P1111, P1121 and P1642. I cleared the codes and the car runs fine. After about 10 minutes of driving, the "Engine in failsafe mode" light comes on, but the car runs with no noticeable differences. I was once a Ford Master certified technician and know my way around diagnostic charts and I can speak the lingo. I just don't have the diagnostic charts. Can anyone help with any answers or experiences? Replies to this message: bigdadbear (May 12, 2009 2:48 pm)
#9 of 13 Re: DTCs P1000, P1111, P1121 & P1642 [snakedoctor56] by bigdadbear May 12, 2009 (2:48 pm)
Replying to: snakedoctor56 (Apr 11, 2009 7:59 am) Hi- I own a 1998 XJ8 I just read your post on the codes --- I have a 1642 code which indicades a CAN ( Control Area Network) issue- which would be caused by either a bad connedtion between the ECM and one of the body control units -- I think mine may be related to the cruise control module.. The 1121 code indicates throttle pedal position sensor issue, this devise is activitated by your throttle pedal -- the could be as simple as raising the hood and spraying the devise that is connected to your pedal wire with electrical contact cleaner and then ( with the engine off) working the Pedal up and down 5 or 6 times and spraying again and working the pedal again    I would appreciate your finding with the 1642 code since i have the same issue. I did rest my code and turned OFF the cruise contol switch to see if the code comes back on --- I will let you know   The P1000 code indicates the code functions are working. This code you should not be concerned with. The P1111 codes indicates the code system has done a complete scan.--- This code likewise should be ignored for NOW.   The 1642 and 1121 could be just a bad connection at the PLUG of the harness between the ECM and the other devices Unplug the connectors and plug them back together.. If you need more detail Eamil me at crpacecox.net Hope this helps
#10 of 13 check eng light by gonzo49 Oct 09, 2009 (7:25 pm)
i have a 93 xj and the eng. light has been on how do i turn it off.
#11 of 13 service eng. light on by gonzo49 Oct 09, 2009 (7:49 pm)
i have a 2000 ford van E-150 and the service light is on can one some tell me how to turn it off what do i need to do. thanks
#12 of 13 Engine CK lt by bigdadbear Oct 09, 2009 (9:33 pm)
Go to autozone they will check codes for free... ask them to clear the code... Replies to this message: gonzo49 (Oct 13, 2009 7:36 pm)
#13 of 13 Re: Engine CK lt [bigdadbear] by gonzo49 Oct 13, 2009 (7:36 pm)
Replying to: bigdadbear (Oct 09, 2009 9:33 pm) thank you i'll try that

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