This poor 2013 2.2tdci Ford Transit Tipper had been off the road for a long time, passed from garage to garage with no one able to put it right.
We collected it and limped back to the workshop, where our initial assessment found fault codes p23463 Soot accumulation, p246c DPF restricted – forced limited power and p0546 Exhaust temperature sensor circuit high bank 1.
With the DPF pressure measuring 17mbar on live data but far more when tested with a digital metre it was clear that the differential sensor was faulty, knowing the fuel vaporizer’s are also a common issue we tested the unit and it was found to be blocked.
2 new genuine parts where quickly sourced and ordered.
After examining the exhaust temp sensor it soon became obvious that the writing from the main loom had been routed poorly by a previous repairer and further investigation found that there was no voltage making it through to the sensor – after testing the wiring all the way up the loom with no power reading we eventually got to the ECU itself.
After carefully removing the two main connectors we found the cause of the problem – one of the ECU pins had been bent over and wasn’t able to make a connection!
A careful operation to slowly straighten the pin began which was thankfully successful.
More diagnostic testing proved that that issue had been resolved so we went ahead with our 3 stage DPF clean.
With pressure greatly reduced and new parts fitted it was time for a test drive. As soon as we exited the motorway slip road the ECU triggered a DPF regeneration – the 1st one for a LONG time. Temperatures in the DPF rose and settled at around 600 degrees celsius for 10 minutes further cleaning the filter and reducing the soot content.
Mission accomplished!
We don’t just clean DPF’s – our specialist service and knowledge helps us correctly identify the root causes for the DPF getting blocked, only once these issues are fixed will we proceed with cleaning the filter.
