DTC P1400

DTC: P1400 Electrical activation of the EGR switchover valve (Y27)

Activation requirement CHECK ENGINE lamp:
Two consecutive trips with failure.

Activation of CHECK ENGINE lamp:
At start of next trip.

Test to detect fault:
The engine control module checks the activation of Y27 and sends a message via CAN if a fault is present. If a problems occurs longer than approximately 5 seconds, the diagnostic module recognizes a fault.