u/Double-Thought6906

Hey all,

Does anyone have an experience with the code 290900? My 2012 320d efficientdynamics has been throwing an amber engine light.

My mechanic has checked over the car and says it’s in good working order and can’t explain why the code keeps reappearing. Timing chain and egr replaced 3 months ago. Rocker gasket seal replaced last month.

Any ideas on how to cure?

Thanks.
A