Timing is everything. As the owner of almost any vehicle made since 1996, everyone fears the “Check Engine” light or “Service Engine Soon” light. Some people ignore it until something changes and they notice something is wrong, some people make an appointment right away to have it checked out. In some instances it may be more than one fault, especially if it has been ignored for some time. When having the faults read, you can find some great information as to what’s going on inside your car, and sometimes it can save you from what could be a very big problem.
We recently had a 2010 VW Gti in with the following fault code: P0016/000022 – Bank 1: Camshaft Position Sensor (G40) / Engine Speed Sensor (G28): Incorrect Correlation. The vehicle took slightly longer to start then what was expected. After a discussion with the owner of the Gti it was left to be taken a part enough to check the timing. Removing the covers revealed the photo below.
A failing timing chain tensioner had allowed the chain to start to slip out of time. Had the light not been on this would have only lasted so long before the engine went out of time and a great deal of damage had been done.