Quote:
Originally Posted by Tambohamilton
Can you read codes using INPA? May have shadow codes which could be a clue.
I think, but have no proof, that 0480 and 0481 codes correspond to the EGT not reaching 250degC quickly enough during active regen, and that an adaptation limit has been reached and it still doesn't reach 250C.
So if that's true, it means that either the EGT probe is faulty (possible, but I think it would normally fail in a way that would cause a code), or there's something else in the fuel/combustion systems that is preventing the increase in EGT. My first suspect would be glow plug module, even though it's not causing any codes.
|
I don't have access to an INPA system, and I don't know anyone locally who does. I'm going for a run tomorrow to compare idle/warmed up temperatures and pressures. I know the previous owner replaced the (heat?) sensor and pressure sensor with OEM parts, so it may be glow plugs.
Is it possible for the glow plug module to throw a shadow code and not appear in an OBD read? I'm a relative newbie to this, so appreciate the help!