The EGR valve is blocked | Jerking engine | Loss of power | Causes and solution

What do the error messages P1444 and P16786 mean?
Is the air mass sensor the problem?
Why is the car jerking and what is the reason for the loss of power?
Find out what causes these faults and how you can remedy the issues here.

00:00 Case of damage and error messages
00:23 Foreign body in the EGR
01:04 Rectify error

Foreign bodies from the catalytic converter area can be sucked through the lines of the exhaust gas recirculation due to pulsations in the exhaust tract or the vacuum in the intake air system of petrol engines. If a foreign body blocks the EGR valve in open state, exhaust gas is permanently fed back. This results in the described complaints and error messages, such as

- P1444 position sensor EGR valve – area/function error
- P16786 EGR – throughput too high

The fault is often attributed to the air mass sensor if less supplied fresh air is measured than is calculated for this operating state.

You can read all about it here: https://www.ms-motorservice.com/en/technipedia/post/egr-fault-due-to-foreign-bodies-from-the-exhaust-tract/

More info here: https://www.ms-motorservice.com/en/technipedia/post/troubleshooting-in-exhaust-gas-recirculation-system-on-otto-and-diesel-engines/

And here: https://www.ms-motorservice.com/en/technipedia/post/electric-egr-valves/

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