A stretched timing chain contributes to poor engine performance and increased emissions, triggering the check engine light and the storing of a diagnostic trouble code. A mechanic will need to inspect the code and prescribe the necessary repairs.

What is the code for a bad timing chain?

How Serious Is Code P0009? – Severe. This trouble code can cause the vehicle to be hard to start and run rough. In some cases, the vehicle may not be driveable.

Will check engine light come on for timing chain?

illuminated check engine light: the car's computer monitors engine operation to ensure emissions don't get too high. a stretched timing chain will hurt engine performance and increase emissions. if this happens, the computer will turn on the check engine light and store a diagnostic trouble code.