Been running ATP tunes for a few months now. Just recently did EGR blocker plate, and it threw a CEL. Contacted ATP and they advised my tunes were in fact written for EGR delete. They suggested unplugging the EGR. Tried this, and still haven't solved the CEL issue. Trucks been fine the whole time, just looking for suggestions on anything else to get this light to shut off. Thanks in advance.
LBZ: P0401 and P0405
- Thread starter dunnc1991
- Start date
The egr may be shut off in the tune but is clearly not turned off in the DTC code list. Have them make sure it is.