I just had the ECM parameters reset for fuel composition when the check engine light came on with DTC P1174 back on 3/05/15. My wife has been on the road for 10 hours today traveling to texas and the light came on again. We have a 2008 chevy Tahoe which uses E-85 or unleaded. Is this a common problem when E-85 and unleaded is mixed? Also is this something that can wait to be fixed until she returns home
Hi there,
This code indicates an issue with the fuel trim on bank 1. Here is some info for you.
P1174 CHEVROLET - Fuel Trim Cylinder Balance Bank 1 Read more: https://www.autocodes.com/p1174_chevrolet.html
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