P10E5

1F0904 - P10E5

Information saved in
DME

Fault code
1F0904 - P10E5

Fault text
DME, internal fault, activation Valvetronic: malfunction

Fault description
The diagnostic function monitors the current flow through
the Valvetronic actuator motor when the driver circuit is
switched off.

Condition for fault identification
Test condition:
The fault is logged in the ECU fault memory when the
current draw in the driver circuit exceeds 4 amps while the
driver circuit is deactivated.
Potential problem source(s):
- Defective wiring harness
- Defective DME
Terminal condition: Terminal 15
Voltage condition:
- Onboard electrical system voltage between 9 V and 16 V
Temperature condition:
- None
Time condition:
- None
Other conditions:
- Voltage behind motor relay > 5 V

Condition for fault memory entry
This fault is logged in the control module's fault memory
immediately.

Action in service
- Check wiring harness between Valvetronic actuator motor
and DME
- Replace DME

Fault effect and breakdown warning
Breakdown notice:
- none
Possible apparent symptoms:
- Breakdown in extreme cases

Driver information
Warning light:
ECE:
- ECE emissions warning lamp: off
- ECE electronic engine power reduction: on
- CC message: on
MY10 US:
- US emissions warning lamp: on
- US electronic engine power reduction: on
- CC message: on

Service instruction
If the fault occurs while the Valvetronic unit's stroke is not
at full extension then the engine will stall and fail to restart.
This is because the Valvetronic driver circuit is deactivated
and the Valvetronic unit cannot return to minimum stroke. If
the fault occurs at maximum stroke, unrestricted throttled
operation is possible.