Code P0012, misfire on all cylinders

Hello,

The code
P0012 Camshaft Position "A" - Timing Over-Retarded (Bank 1)

There are a number of reasons why this code can get triggered. It could be due to a faulty sensor, out of sync valve timing, even ECM.

I have attached the troubleshooting steps for this code below. Follow those steps as it can help you determine the issue.

Let me know of any questions.
Thank you.