Electrical failure in valve 1 solenoid.
â–¶ How to fix
Check cables and connectors. Replace solenoid.
What you'll see
The valve will open independent of request from the engine management system.
System reaction
Amber engine warning lamp
Diagnostic depth
Detection
The GSC control unit is indicating too high current on the high side (A13) and too low current on the low side (A16) of the solenoid controlling valve 1 (V209).
Possible cause
High pressure valve 1 Circuit Short To Ground