Question

I got the engine codes P0200 and P0300 with throttle body in a 2001 GMC Sonoma 4.3L, what do the codes mean?

Answer 1

Hi there, 

The P0200 code indicates an issue with the fuel injector. Here is some info regarding this code.

P0200 GMC - Injector Circuit Malfunction
Read more: https://www.autocodes.com/p0200_gmc.html

The code P0300 indicates misfires on random cylinders. Here is some info regarding this code.

P0300 GMC - Cylinder Misfire Detected Random Cylinders
Read more: https://www.autocodes.com/p0300_gmc.html