2006 kia optima. miss fire and camshaft actuator

Question

I have cylinder misfire and random miss fire
The codes are P0012, p0020 and p0021
what would be steps to fix these problems.
The car starts and after running for about 5 seconds it dies.

Answer 1

Hi there,

These codes indicate an issue with the variable valve timing. Here is a list of possible causes.

P0021 KIA - 'A' Camshaft Position Timing Over-Advanced Or System Performance Bank 2

Read more: https://www.autocodes.com/p0021_kia.html