I have problem with EGR in my car, MB W210 3.0TD ECU MSA25.1. EGR is 100% OK, selenoid is 100% OK, wiring OK but trouble code wont clear P1403 :(
I think is a problem in my ECU, because bypass with resistor and diode not work.
I was desolder and read HHH and LLL memory. Is possible to EGR OFF direct from ECU's flash?

dvjcodec wrote:I have problem with EGR in my car, MB W210 3.0TD ECU MSA25.1. EGR is 100% OK, selenoid is 100% OK, wiring OK but trouble code wont clear P1403 :(
I think is a problem in my ECU, because bypass with resistor and diode not work.
I was desolder and read HHH and LLL memory. Is possible to EGR OFF direct from ECU's flash?

Code is for "DPFE Sensor Hoses Reversed"

wbr

Is: P1403 Exhaust gas recirculation HFM-SFI-controlled

dvjcodec wrote:Is: P1403 Exhaust gas recirculation HFM-SFI-controlled

That should be P0403

wbr

No. P1403, Mercedes, EGR. A lot of published links with this problem, for example:
http://www.fixya.com/cars/t2280600-powe ... 98_trouble
https://www.digital-kaos.co.uk/forums/s ... 03-dtc-off
...etc...
My interface show P1403 and nothing more.