2013 chevy express travel van obd2 code running rich
Hi scotty , thank you for all your help over the years, I have learned so much. I have a 2013 chevy express travel van with 45000 miles on it , travel the us east coast with it, in the last 3 months the check engine light comes on , with the code of running rich, so I changed all the o2 sensors, light stayed off for a month then came back on for two days then went back off. considered purchasing a more expensive obd2 scanner to change the alcohol content , but not sure if that is wise to spend the money or go to dealership to have the scan, but i have little faith i will get the right answer. what would you suggest?
Is this a Flex Fuel engine?
what code comes up? P0172? P0175? If it’s P0175 it could be an exhaust leak, leaky injectors, could also be a bad fuel pump or fuel pressure regulator? Test those and see.
yes i believ eit was the po172, bank two running rich, but not cocsistent, it would appear then go back to normal, so i changed the o2 sensors, but the check engine light came on again for two days then disappeared. it is a flex fuel engine meaning it can take the e85 fuel ethanol mixture
thank you, I will try this