12 03 98 (331)
DME fault code 67/68 - VANOS end position regulation
Whenever a camshaft pulse generator (inlet or exhaust) is renewed, the engine will enter emergency running mode, i.e. the engine will run with reduced torque and output.
The following fault codes are stored in the DME fault memory:
Fault code ”67”
VANOS end position regulation - fault on inlet camshaft
Fault code ”68”
VANOS end position regulation - fault on exhaust camshaft
The ”Check Engine” lamp comes on in US vehicles.
The above fault pattern can also occur after an exchange of the engine, VANOS adjustment unit or the exhaust camshaft sensor gear.
New, improved pulse generators (inlet and exhaust) were introduced into series production on 26.06.1998.
These new pulse generators must be combined with the new DME program version introduced into series production on 17.06.1998.
The parts sales department will in future only provide the new pulse generators. This also applies to vehicles with the old DME program version from start of series production to 16.06.1998.
The pulse generators old/new can be identified by the 7-digit part number printed on the part.
|Pulse generator, intake camshaft||New part number 1 438 081|
|Pulse generator, exhaust camshaft||New part number 1 438 082|
|Pulse generator, intake camshaft||Old part number 1 435 350|
|Pulse generator, exhaust camshaft||Old part number 1 435 351|
The following spare parts only contain the new camshaft pulse generators:
|-||Double VANOS adjustment unit|
|-||Exchange double VANOS adjustment unit|
Manufacturing period: Start of series production until 16.06.1998
In case of replacing a camshaft pulse generator (inlet or exhaust), the VANOS adjustment unit or the engine on the above vehicles, the DME control unit must also be reprogrammed.
The necessary data can be found on CD15 or a higher version.
The DME control unit must also be reprogrammed whenever the exhaust sensor gear is renewed.
The new DME program version tolerates greater sensor gear wobble.
If the fault entry is repeated after reprogramming the DME control unit with CD15, it can be assumed that a ”real” mechanical fault is present. In such cases, conduct troubleshooting according to the instructions in DIS.
|Pulse generator, intake camshaft||New part number 12 14 1 438 081|
|Pulse generator, exhaust camshaft||New part number 12 14 1 438 082|
It is not necessary to clear stocks in the parts warehouse.
Mixed installation of old and new pulse generators (inlet and exhaust) is permissible.
2 (outside vehicle warranty)
It is only permitted to make a claim for reimbursement under the above job numbers.
Reimbursement is limited to 36 months/100,000 km and only possible until September 2001.