Schoolbus Tech
20th February, 2013, 12:11 PM
I had this issue with the DPF filter system . After getting a 154 ghost code < thats one that is not in any list> I did use DDDL after this but I got a letter from the training Manager from freightliner . But THEY LIED the bus inquestion is a almost the end of 2008 yr production . I got with the freightliner tech about the DPF issue rear pressure sensor pressure to high no problem with the line or the wiring and replaced the sensor . He told me they had a same issue in another county after to many hours of diagnostics they replaced the DPF unit that fixed it check out the attached file .