P1050

133208 - P1050

Information saved in
DME

Fault code
133208 - P1050

Fault text
Valvetronic servomotor, activation: open circuit

Fault description
The diagnostic function monitors the Valvetronic actuator
motor's three phases for an open circuit in one of the wires.

Condition for fault identification
Test condition:
The driver circuit is deactivated when a fault is suspected.
The fault is logged when the measured diagnosis voltage is
less than 0.35 V ? 0.61 V.
Potential problem source(s):
- Defective wiring harness
- Valvetronic actuator defective
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 > 5V

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 Valvetronic actuator motor

Fault effect and breakdown warning
Breakdown notice:
Continued driving is usually not possible.
Possible apparent symptoms:
If the malfunction occurs while the VVT system is not at its
maximum stroke position, the engine stalls/vehicle breaks
down. Engine will not restart, as the VVT driver circuit is
deactivated and the VVT system reverts to minimum stroke.
If the fault occurs at maximum stroke, unrestricted throttled
operation is possible.

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
None