Renault Megane 16. 1997 Seimens Fenix 5 - Idle fault when cold / Code 4103 power supply control unitArchived Message
Posted by Russ Milverton on December 11, 2003, 10:19 pm
Problem with idle mainly when cold, I code read it and got Fault code 4103 power supply control units. First question is could this be because the battery has been disconected or possibly the imobiliser. I cleaned the throttle body & idle valve & thought the problem was curred but it's still not right. all the live data looks ok. Thats as far as I've got at the moment I looked in the archives but couldn't see anything. Any thoughts would be welcome. Thanks Russ