While I was waiting in the car today, I was playing about with the ETM and when it gets to the DTC part, it showed a few codes.

If you've delved into the ETM it's full of numbers and codes for all sorts, but are they fault codes that I'm seeing under the DTC section or information codes for mechanics? They didn't seem to follow the same format as any DTC codes I've seen before, which are usually a letter and 4 numbers.

My ELM isn't picking up any codes, so I was surprised to see them in the ETM.

The ETM also shows numbers for the TCM and PCM, is that the current software installed?

I'll try the ETM again later and write down what I see, but just wondered...

 

I've posted before how to decode them but there's not really any point unless you've first cleared them - they are likely many years old - and see which are present now. You can clear using an OE-type tool.

 

The PCM and TCM were cleared about 6 months ago, so all codes should have been cleared then?

Do you have a link to how to decode them?

 

No - you have to clear the ICM whence the ETM is getting the codes.

 

OK, that's a trip to an indy I take it? What's the ICM and how can I decode the current codes?

 

This seems like one of the most pointless things. If you really want to look at ancient codes why not get a JLR Mongoose? Then you can get other ancient codes as well as these ones!

 

It would be of interest to me, not pointless. Do you know how to decode them?
If the codes that were cleared 6 months ago were not in the ICM, which is why my ELM doesn't see them, wouldn't these ETM codes include current ones?

 

Unsurprisingly, the ICM is where the codes reported by the ICM are stored. Like almost every module it keeps them forever and they're not lost if the battery is disconnected. I posted acronyms...

 

Oooh, I do hate riddles.
ICM - Ice Cream Malt? Instant Cooked Meat? Instrument Control Module? Instrument Cluster Module?
Am I close or is it a secret?

 

Ahem! What is wrong with reading the acronyms in the stickies, pointed to by my sig and my post above?

 

I had my selective reading glasses on.

However, can you tell me what they mean if I post them? Just out of curiosity.

 

Some info here

 

It "just " means hex to ascii and the like. If I tell you your codes are 6 years old and haven't happened since then, what will you do?

You can find my previous posts on how to convert if you look, you know!

 

1) Eh?
2) Then I will know what I didn't know before.
3) You can find a lot of stuff if you look, but it's always helpful if the poster could link to his relevant posts.

I'm not really sure as to why you are being so protective about the DTC meanings?

 

Cheers for that Norri, however that doc. doesn't give any information about what the DTCs mean.

 

I didn't say it did did I?

It gives you information on the ETM functions, I've no idea how to decode the DTC's and I'm not to bothered to be honest.

However if you do figure it out don't forget to let us know.

 

Well I've no idea how long ago I posted it. I figure that's what Search is for, means those who want the info can go find it.

 

Manycars, it really is useless information but to try and put it to bed and maybe help you sleep better, here's what I know

Engineers 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.

It is all in jtis somewhere, you'll just have to trawl through it till you find it.

 

They're as encoded in the OBD standards but reading JTIS is easier if it's in there. Not where I got it from but note that the standards are not open or free

 

Hi police666. When I trawled the net, I found that same information as you posted, but still no meaning of the codes.

JTIS, I tried to download that before and it did't work, so I gave up.

I was curious about the DTCs showing in the ETM, old or not, but now I'll leave it. It clearly isn't worth pursuing.

Thanks all.