Mass flow sensor (DM_EGR), stuck
â–¶ How to fix
Check the connection to the sensor and its installation. If it is correctly mounted and the wiring is good, replace the inlet mass flow sensor. To erase the DTC, run the engine with medium or high load for 5 minutes. If the fault is healed, the DTC will become passive and can be erased.
What you'll see
No driver-visible symptom recorded.
System reaction
The engine will use a calculated value of the mass flow and engine performance will be affected.
Diagnostic depth
Detection
The value from the mass flow sensor is constant although the engine operation/speed indicates that it shouldn’t be constant.
Possible cause
The sensor may be defect.