Manufacturer Code Charts: 135604

135604 - P1030

Information saved in
DME

Fault code
135604 - P1030

Fault text
Valvetronic system: control deviation too great

Fault description
The diagnostic function monitors the Valvetronic system's
control precision.

Condition for fault identification
Test condition:
The fault is recognized when a counter rises above the fault
threshold of 10 000. The counter is incrementalized when
the closed-loop control difference exceeds a specified
threshold while the Valvetronic actuator motor is stationary.
Potential problem source(s):
- Defective wiring harness
- Valvetronic actuator defective
- Valvetronic system sticking
- 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:
- none

Condition for fault memory entry
none

Action in service
- Check wiring harness and plug connectors for electrical
faults
- If other diagnostic fault codes related to Valvetronic are
logged, work through these first
- Check Valvetronic mechanism for freedom of movement,
wear and stiction (with external voltage source connected as
required)
- Replace Valvetronic actuator motor
- Replace components with mechanical wear
- Replace DME

Fault effect and breakdown warning
Breakdown notice:
None
Possible apparent symptoms:
Unrestricted, throttled operation remains available if the
VVT system's stroke is at maximum extension.
If maximum stroke is not achieved, results ranging from a
power loss to breakdown can occur depending on the VVT
position that the system does reach.

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