Engineer Test Mode - DTCs showing
#1
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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...
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...
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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?
Last edited by manycars; 12-17-2013 at 02:58 PM.
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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.
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.
Last edited by police666; 12-17-2013 at 07:00 PM.
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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 .............
It is all in jtis somewhere, you'll just have to trawl through it till you find it.
Engineers Test Mode (ETM) will indicate Many of the vehicle DTCs however it will only show faults detected during continuous operation .............
It is all in jtis somewhere, you'll just have to trawl through it till you find it.
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.
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Thanks all.