Ok so have been doing a bit of cleaning on my Combo (Z14XEP) of the EGR and throttle body before moving on to testing and cleaning (where possible) sensors. Some time ago I was sold "ASK Uncured HI TEMP SILICONE" on the basis it is safe to use all around the engine, though I now know this is...

Hi all, I'm after some advice on what to try first to deal with the engine warning lights showing DPF problem. Vehicle is a Zafira 1.9 CDTI year 2006. The engine warning light is on but the vehicle seems to run okay and isn't in limp mode. The pedal check shows two error codes as follows 1)...