Code Fault reaction Description of fault Possible cause Ter-
minal
on
BLM
Input
code
for
diag-
nose
1040 Output is switched
off, function no
longer possible
Output valve travelling
reverse, Y 17
Too high current flow out of
this output Output was
switched off!
Excessive current flow in
current path, probably
because of a defective coil
or a short circuit to ground
X3:24 -
1041 Output is switched
off, function no
longer possible
Output valve travelling
reverse, Y 17
Short-circuit current flow out
of this output Output was
switched off!
Short circuit to ground in
the current path
Lines rubbed through
Valve defective
X3:24 -
1042 Output is switched
off, function no
longer possible
Output valve travelling
reverse, Y 17
No or too low current flow out
of this output
Wire breakage in current
path
Current path connected to
+12V
X3:24 1040
1041
1042
1043 Engine is shut
down
Output valve travelling
reverse, Y 17
Although the output is
switched off, voltage is
present
Current path connected to
+12V
X3:24 1040
1041
1042
1050 Output is switched
off, function no
longer possible
Output valve 2. gear, Y 03
Too high current flow out of
this output Output was
switched off!
Excessive current flow in
current path, probably
because of a defective coil
or a short circuit to ground
X3:11 -
1051 Output is switched
off, function no
longer possible
Output valve 2. gear, Y 03
Short-circuit current flow out
of this output Output was
switched off!
Short circuit to ground in
the current path
Lines rubbed through
Valve defective
X3:11 -
1052 Output is switched
off, function no
longer possible
Output valve 2. gear, Y 03
No or too low current flow out
of this output
Wire breakage in current
path
Current path connected to
+12V
X3:11 1050
1051
1052
1053 Output is switched
off, engine runs
only with idle speed
Output valve 2. gear, Y 03
Although the output is
switched off, voltage is
present
Current path connected to
+12V
X3:11 1050
1051
1052
1060 Output is switched
off, function no
longer possible
Output brake valve, Y 04
Too high current flow out of
this output Output was
switched off!
Excessive current flow in
current path, probably
because of a defective coil
or a short circuit to ground
X3:40 -
Appendix – List of fault codes
D.ONE
171
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