The largest and best supported Jaguar cars enthusiast site on the Internet!

Serving Enthusiasts since 1993
The Jag-lovers Web

Currently with 0 members

Generic and Jaguar specific OBD-II Diagnostic Trouble Codes

Generic and Jaguar specific OBD-II Diagnostic Trouble Codes

A second version of the Diagnostic Trouble Codes known as OBD-II ['On-Board Diagnostics'] were introduced during MY 1996. These codes are used in the electronic monitoring of nearly all engine controls plus certain other parts of the vehicle such as the chassis and body.

OBD allows you to read information from the vehicle usually using a plug-in diagnostic tool to read fault or error codes. Unfortunately, you usually need a PC, Handheld (see image right), manual or other reference to find out what the codes mean, especially with the manufacturer-specfic codes.

Here is a reference to the more common fault codes, both generic and Jaguar-specific. Use your browser search function to find your code below (if we have it). These codes are being added to all the time - if you have additional ones not shown here or have corrections, please let us know via 'helpme at'!

You can find lots more information about OBD-II in general at The OBD II Homepage. You are advised not to replace any part based solely on a DTC. Detailed test instructions can be found in your carís service manual and this will have testing procedures for every DTC with instructions plus flow charts which will confirm the problem's location.

Note that we do NOT guarantee the accuracy of the codes shown here and you should double check the information before acting on any diagnostic code.

The first alpha character identifies the system generating the code
  • P = Powertrain
  • B = Body
  • C = Chassis
  • U = Undefined

    The second digit says if the code is generic - same for all OBD-II systems - or manufacturer specific
  • 0 = Generic (zero)
  • 1 = Enhanced (manufacturer specific)

    The third digit is sub-system type for that code
  • 1 = Emission Management (Fuel or Air)
  • 2 = Injector Circuit (Fuel or Air)
  • 3 = Ignition or Misfire
  • 4 = Emission Control
  • 5 = Vehicle Speed & Idle Control
  • 6 = Computer & Output Circuit
  • 7 = Transmission
  • 8 = Transmission
  • 9 = Reserved
  • 0 = Reserved

    You need to be a Registered Jag-lovers member and have Donated to view the OBD-II code listings.

    Please help support the move to the new site, and DONATE what you can.
    A big Thank You to those who have donated already!



    Go to our Homepage
    Improve your Jag-lovers experience with the Mozilla FireFox Browser!

      View the latest posts from our Forums via an RSS Feed!

    ©Jag-loversTM Ltd / JagWEBTM 1993 - 2024
    All rights reserved. Jag-lovers is supported by JagWEBTM
    For Terms of Use and General Rules see our Disclaimer
    Use of the Jag-lovers logo or trademark name on sites other than Jag-lovers itself in a manner implying endorsement of commercial activities whatsoever is prohibited. Sections of this Web Site may publish members and visitors comments, opinion and photographs/images - Jag-lovers Ltd does not assume or have any responsibility or any liability for members comments or opinions, nor does it claim ownership or copyright of any material that belongs to the original poster including images. The word 'Jaguar' and the leaping cat device, whether used separately or in combination, are registered trademarks and are the property of Jaguar Cars, England. Some images may also be © Jaguar Cars. Mirroring or downloading of this site or the publication of material or any extracts therefrom in original or altered form from these pages onto other sites (including reproduction by any other Jaguar enthusiast sites) without express permission violates Jag-lovers Ltd copyright and is prohibited
    Go to our Homepage
    Your Browser is: CCBot/2.0 (, IP Address logged as on 17th Jul 2024 19:08:47