Mazda 6 Diesel Won't Start - Fault Code P0016: How to Diagnose and Fix
Dear Forum Members, I'm a new owner of a Mazda 6 Diesel and am currently facing a serious starting issue. After purchasing the car at an auction (a questionable decision), it would not start despite cranking repeatedly. A local mechanic helped by removing the air filter box and sprayed some 'Easy Start' — after which the engine started immediately and I drove home about 50 miles without any problems. However, when I turned off the engine, it failed to restart. My friend then connected a diagnostic tool, which returned fault code P0016. The device suggested issues with the crankshaft or camshaft position sensors. I'm now unsure where these sensors are located and how to properly diagnose or replace them. Can anyone provide guidance on locating the crankshaft and camshaft position sensors in a Mazda 6 Diesel? What steps should I take to fix this issue? Thank you for your help — Dave.
I recommend checking your Haynes or Chilton repair manual, or using a temporary subscription to Alldata to locate the exact position of the crankshaft and camshaft sensors. These components are typically situated near the engine balancer or flywheel, depending on the specific engine configuration. Proper diagnosis requires understanding sensor placement and signal behavior — ensure you follow the correct diagnostic procedures before replacing any parts.