naturist wrote:
Detail: guys, those who've had more than one EGR replaced, take note.
There are, it seems, TWO parts that throw EGR codes. One is the actual EGR, the other is on the intake side, and is also know as an anti-shudder valve. The part numbers are 5142799AA and 516555AB.
On my CRD, the EGR was replaced twice, both times the CEL came on within a couple hundred miles, before the anti-shudder valve was replaced, and THAT seems to have done it. My theory is that the anti-shudder valve causes the same codes, but for some reason isn't the part that is replaced, sometimes in error.
The The EGR and Flow Control Valve (aka anti-shudder valve) are on same side of the engine and bolt together. They don't throw same code but one is probably mistaken for the other by non diesel experienced tech. The orginal deffination for the FCV code was for a throttle body failure and may have also led to some confussion.
When my FCV went bad the parts dept ordered a EGR instead of EGR FCV as requested by tech (a new kid in parts with a shacky rep that may be looking for new job before long), and I ended up waiting an extra two weeks. The tech tested the repair without even doing the install. He unplugged the FCV cleared the code and plugged in the new FCV (there was enough of the wiring harness to allow for the test) and no CEL, then he replugged the harness back into the old FCV still mounted on engine and it threw a CEL as soon as key was turned on.