area51photo Report post Posted April 16, 2018 I have a 2002 Alfa Class A Motorhome. I have the following engine codes for my Cat 3126B engine. code: 39 code: 15 and code: 71. Does anyone know where I can find the meaning of these/ Thanks Share this post Link to post Share on other sites
rossboyer Report post Posted April 17, 2018 Try Google for Caterpillar 3126B code xx. Some show two codes for an error. Share this post Link to post Share on other sites
area51photo Report post Posted April 19, 2018 Thank you. Share this post Link to post Share on other sites
