2011 Nissan Qashqai DPF Light & Engine Management Light

25 Feb 2018

A very big problem in the motor trade is misdiagnosis leading to wasted money and failed repairs.

Today we had an example where the customer wanted to book us to do a DPF clean, the problem is until we have done our diagnostics which involves more than merely reading fault codes.

Once I had read the fault codes which included an indication of a blocked DPF but further testing showed this wasn’t the case, there was also a fault for an exhaust temperature sensor so infact this was the fault that caused a failed regeneration causing the other faults, in this case a clean would have been a wasted expense which is why so many fail to cure the problem.