P0006

2B7A - P0006

Information saved in
DME

Fault code
2B7A - P0006

Fault text
DME: Return-flow shut-off valve, activation

Fault description
Activation of return shut-off valve

Condition for fault identification
Test condition:
Voltage at Pin 1-02 less than 3V
Terminal condition: Terminal 15
Voltage condition:
9.5 < U < 17.9

Condition for fault memory entry
n> 40 rpm

Action in service
Stecker / check wiring harness, otherwise replace DME

Fault effect and breakdown warning
Possibility of hard hot starting

Driver information
Warning light:
none

Service instruction
none