Car Questions

Notifications
Clear all

2013 chevy express travel van obd2 code running rich

   RSS

0
Topic starter

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?

 

thank you 

kevin

Burlington Canada

 

Topic Tags
5 Answers
2

This is a known problem with flex fuel engines. You'll need someone with a Tech2 OBD tool to reset the alcohol content. However, it's not a permanent fix. Unfortunately, the problem will probably plague you for the duration of your ownership.

https://static.nhtsa.gov/odi/tsbs/2014/SB-10069954-0335.pdf

 

https://carkiller.com/scottykilmer/qa/2008-silverado-flex-fuel-cat-replacement/

unfortunately, you probably wasted your money on the O2 sensors. The light only went out because the computer was re-learning some parameters when you changed them.

1

Is this a Flex Fuel engine?

0

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.

0
Topic starter

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

 

0
Topic starter

thank you, I will try this

Share: