Porsche DME 7.8 — OBD II Diagnosis Manual / PAGE 105
DME 7.8 DME 7.8 0 · AHKATS-Sum total of ahkat + ahkat2
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DME 7.8 DME 7.8 0
1 - poor
AHKATS-Sum total of ahkat + ahkat2
A - Symmetry line HC Bank 2
HC - HC emissions A
The cases for catalytic converter bank 1 are shown in the graphic. AHKATS
The same applies for bank 2.
5 6
1 TWC 1 OK
2 TWC 1 OK
3 TWC 1 OK
1 2 3 4
HC Bank 1
4 TWC 1 faulty (P0420) AHKATMN AHKATSB AHKATMX
ahkat
5 TWCs 1 and 2 faulty (P0420 and P0430) 0 1
6 TWC 1 faulty (P0420)
In the case of the individual CIDs, the limit values (maximum) and the
test value of the last test are output.
Maximum: fault, if the test value is greater than the limit value.
The following CIDs can be displayed:
$00 Test not yet carried out
$05 Conversion bank 1
The values displayed can be multiplied by the factor 0.0039 to find
the ahkat or AHKATMX values.
$06 Conversion bank 2
The values displayed can be multiplied by the factor 0.0039 to find
the ahkat or AHKATMX values.
Note!
CID $05 and $06 are displayed if the test was completed without
faults. The values provide information as to how far the catalytic
converters still are from the limit values.
$07 Checksum error, bank 1 and bank 2
DTC P0420 and P0430 in memory.
The values displayed can be multiplied by the factor 0.0078 to find
the ahkat and ahkat2 or AHKATS values.
$08 Checksum range error, bank 1
DTC P0420 in memory.
Data output with a scan tool - 911 Carrera (996) 0-3.1 page 19
Printed in Germany – 8, 2002 dsc_FL78
This is a source reference. Confirm exact model applicability in the original material.
