Posted for someone else, thought a search one with info might help someone later on.

The Jaguar X Type instrument clusterEngineers Test Mode (ETM) will indicate Many of the vehicle DTCs however it will only show faults detected during continuous operation and not self test faults. Because of this it should not be considered as a replacement for an OBDII code reader required to read the standard DTCs.

The codes are presented in hexadecimal format, the Most Significant Bit will be a number or letter 1,9,A,D or E, followed by 3 Decimal digits.

The first hex digit corresponds directly to the DTC code identifying the system related to the trouble code.


1XXX relates to Enhanced (manufacturer specific) codes P1
9XXX relates to Body Enhanced (manufacturer specific) codes B1
AXXX relates to Body Enhanced (manufacturer specific) codes B2
DXXX relates to Undefined (manufacturer specific) codes U1
EXXX relates to Undefined (manufacturer specific) codes U2



The last 3 digits are in Decimal and relate directly to the DTC code. i.e D900 = U1900 which is a CAN bus fault.
The numbers can relate to a number of different problems (like the example above) so should only be used as a guide. The use of a DTC code reader is the best way to recover diagnosis codes and information

 

Ignore them!

They've been there since the car was made and are normally complete junk.

To read CURRENT (or even recent) codes get a suitable tool - they are almost free.

 

@Jagv8, your responses in several posts sure seem to point to your personality being awfully contrary.

As my grandfather taught me as a child, if you can't say something nice or useful, be quiet. Been a good lesson learned throughout my many years on this 3rd rock from the sun.

 

That IS useful - you do not want to be chasing non-existent faults, which you will be if you take notice of the ones revealed this way.