P0016
42B5 - P0016Information saved in
DDE
Fault code
42B5 - P0016
Fault text
DDE: Engine speed monitoring: Difference between
crankshaft and camshaft positions too high
Fault description
An angular offset between crankshaft and camshaft
produces a deterioration in exhaust emissions. This
monitoring function detects angular offset between camshaft
and crankshaft. The median angular offset must lie between
-20 � Kurbelwinkel and 20 � Kurbelwinkel. The following
error debounce is carried out when the limits are violated:
When the deviation in camshaft position corresponding to
error status is detected for 6 consecutive operating cycles the
DTC is logged.
Condition for fault identification
Test condition:
At low engine speeds the defect counter registers actual
consecutive camshaft revolutions. Because the calculation
process only runs once every 100 ms, at high engine speeds
multiple camshaft revolutions can elapse between scans, and
these would not be included. Under these conditions the
defect counter advances by just one increment with each
scan, even if multiple camshaft revolutions have occured.
Voltage condition:
At low engine speeds the defect counter registers actual
consecutive camshaft revolutions. Because the calculation
process only runs once every 100 ms, at high engine speeds
multiple camshaft revolutions can elapse between scans, and
these would not be included. Under these conditions the
defect counter advances by just one increment with each
scan, even if multiple camshaft revolutions have occured.
Condition for fault memory entry
-
Action in service
1. Check bolt retaining sprocket on camshaft.
2. Check sensor reluctor ring attachment.
3. Check camshaft/valve timing.
4. Check timing chain
Fault effect and breakdown warning
Park vehicle.
Driver information
Warning light:
MIL
Service instruction
none