Technical Management light when under load

[Rayjo44]

Hi, I have a 2.8jtd 2003 Motorhome 40K miles. Recently the engine management light has come on when engine working hard usually in 4th gear when on an incline, overtaking, so at or near full throttle. As soon as I ease back on the throttle it goes out. The vehicle has just been serviced and cam belt changed but my local garage can't identify the problem with their diagnostics equipment as presumably it's not sufficiently sophisticated. Otherwise the vehicle drives without problem. Any suggestions please before I take it to a Fiat dealer. Thanks.

 

[corcai]

Hi, I have a 2.8jtd 2003 Motorhome 40K miles. Recently the engine management light has come on when engine working hard usually in 4th gear when on an incline, overtaking, so at or near full throttle. As soon as I ease back on the throttle it goes out. The vehicle has just been serviced and cam belt changed but my local garage can't identify the problem with their diagnostics equipment as presumably it's not sufficiently sophisticated. Otherwise the vehicle drives without problem. Any suggestions please before I take it to a Fiat dealer. Thanks.

For errors under heavy load I would compare requested vs actual fuel pressure. And check the boost isn't exceeding 2.4/2.5 bar.
https://www.fiatforum.com/ducato/430695-2-8hdi-engine-management-light-high-loads-2.html?p=4116323