I have a 2007 CDTi Manual. I recently cleaned the EGR Valve and installed a blocking plate with 10 mm hole, but after putting it back got the "car-Spanner" light. I removed the Blocking plate now and the Spanner light is gone.
However a pedal test gives be p0400SA code. which is related to EGR valve.
I have disconnected battery overnight several times but the fault code does not reset.
-- Does the fault code reset after extended Battery disconnect?
-- If the fault code is coming back; is it due to some malfunction in EGR?
Thanks in Advance for helping me out.