P0400
Read the instructions below then start the fault diagnostic procedure.
Symptom: CHECK ENGINE lamp on.
| P0400 |
Fault symptoms
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CHECK ENGINE lamp on.
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Conditions
The following conditions apply for this DTC:| • |
A diagnostic trouble code is generated when the control deviation is more than 20% from the requested EGR position for 2 seconds.
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Diagnostic help
In the event of a fault, the EGR valve feedback signal will be 70% PWM.See Checking EGR cooling hoses
For more information refer to Menu "Read values" , EGR, feedback signal.
| Note | ||
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A fault in the control module female connector can cause a trouble code. Check the contact for a bent pin, oxidation and tightness of pins. See Difficult faults in PSG16 despite trouble code |
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