2D75

2D75 - P1681

Information saved in
DME

Fault code
2D75 - P1681

Fault text
Control module, internal fault: monitoring of engine speed

Fault description
Electronic Throttle Control Monitor Level 2/3 Engine Speed
Calculation Error

Condition for fault identification
Test condition:
Torque monitor
Terminal condition: none
Voltage condition:
none

Condition for fault memory entry
none

Action in service
Check whether nmot in the General Test Data test data block
is plausible (warm idle at roughly 580 rpm, governor
intervention rpm 6500 rpm); if test value is not OK
check/repair crankshaft sensor and wiring; if test value is
OK and no fault memory entries related to
crankshaft/camshaft are stored in fault log: Replace DME

Fault effect and breakdown warning


Driver information
Warning light:
EPCL + fuel-supply safety shutdown

Service instruction
none