Purge Solenoid Valve Status
Check spring contact connection between ECU and solenoid valve. Erase fault memory and check if the fault is still present. If nothing unusual could be detected replace the ECU.
What you'll see
No driver-visible symptom recorded.
System reaction
Regeneration is still possible. No degraded mode is activated. Switchung is done on the low side, while the high side switch is only for safety reasons. The pressures are still measured and transmitted.
Diagnostic depth
Detection within 2 seconds after occurence of fault when the solenoid valve is switched-off. The fault is stored in the error memory if the condition is still existing after the validation time has elapsed. A re-testing is done every 2 seconds.
The high side driver can not be switched off due to an internal electrical fault.