U1140

CD93 - U1140

Information saved in
DME

Fault code
CD93 - U1140

Fault text
Throttle-valve CAN bus off

Fault description


Condition for fault identification
Test condition:
Bus active && (egas_can_ed_tsperr_lls == 0)
Terminal condition: Wakeup
Voltage condition:
max (ub, u_wakeup) <= K_SMG_CAN_ED_Plus_Min

Condition for fault memory entry
Bus-off from CAN driver

Action in service
1. Delete stored DTCs from error memory, electromotive
throttle-valve actuator system test
2. Check wiring harness to electromotive throttle-valve
actuator 1, electromotive throttle-valve actuator 2 and DME

Fault effect and breakdown warning
DSC lamp / increased idle speed / engine speed limited to
3500 rpm / Check Control message / power reduction / MIL
comes on after engine runs 2x

Driver information
Warning light:
29-Engine malfunction

Service instruction
none