Thought I would spread a bit of hope.
Last year my Doblo 1.9 (120hp) was behaving as if it had a typical case of blocked DPF. P1206 errors started occuring every 700 miles. I could clear and force a regen via Multiecuscan, but the frequency of the errors increased to around every 300 miles. I don't do any urban driving so was most upset!
Using Multiecuscan I could see that all the sensor readings were sensible and predictable. There weren't any random error codes. I could watch the DPF clogging and the max pressure readings until the error got triggered.
Eventually, even the forced regen started failing. I had checked all the usual suspects (MAF/MAP/EGR/DPF pressure pipe) and all was well.
With a Fiat quote of £1600 part only for the DPF, I took a punt and simply replaced the DPF pressure sensor at £60 (the single hose version). I had seen a comment that these go out of calibration so it seemed worth a go.
I am pleased to report that nearly 3000 miles later I have had no more errors.
My advice - do not jump in too fast and gut/replace the DPF. The Bosch pressure sensor may be giving what look like reliable readings, but don't trust it!
This begs the question - when are cars going to get sensors to monitor their sensors?
Last year my Doblo 1.9 (120hp) was behaving as if it had a typical case of blocked DPF. P1206 errors started occuring every 700 miles. I could clear and force a regen via Multiecuscan, but the frequency of the errors increased to around every 300 miles. I don't do any urban driving so was most upset!
Using Multiecuscan I could see that all the sensor readings were sensible and predictable. There weren't any random error codes. I could watch the DPF clogging and the max pressure readings until the error got triggered.
Eventually, even the forced regen started failing. I had checked all the usual suspects (MAF/MAP/EGR/DPF pressure pipe) and all was well.
With a Fiat quote of £1600 part only for the DPF, I took a punt and simply replaced the DPF pressure sensor at £60 (the single hose version). I had seen a comment that these go out of calibration so it seemed worth a go.
I am pleased to report that nearly 3000 miles later I have had no more errors.
My advice - do not jump in too fast and gut/replace the DPF. The Bosch pressure sensor may be giving what look like reliable readings, but don't trust it!
This begs the question - when are cars going to get sensors to monitor their sensors?