Condition Valves Do Not Move (DME)
2B21 - P1628Information saved in
DME
Fault code
2B21 - P1628
Fault text
Bank 1 electromotive throttle-valve actuator predrive check
Fault description
Condition for fault identification
Test condition:
(tmot > K_EGAS_STM_DK_GT_TMOT) &&
CAN OK
Terminal condition: Terminal 87
Voltage condition:
ub >
K_EGAS_STM_DK_GT_Plus
Condition for fault memory entry
Valves do not move
Action in service
1. Check throttle-valve assembly for stiction and physical
resistance to motion, inspect mechanical connection
2. Check plug, wiring harness and power supply
3. Delete stored DTCs from error memory, electromotive
throttle-valve actuator system test
4. Replace throttle-valve sensor 1
5. Delete stored DTCs from error memory, electromotive
throttle-valve actuator system test
6. Replace electromotive throttle-valve actuator 1
Fault effect and breakdown warning
Engine speed limited to 3500 rpm / Check Control message /
power reduction
Driver information
Warning light:
29-Engine malfunction
Service instruction
none