i have replaced snsor twice and same code comes on 2008 gmc 1500 4.8 ltr. with cng cats have also been replace
Hi there,
Since replacing the sensor hasn't solved the issue, it's likely a wiring problem. Here is some more info for you.
P2270 GMC - HO2S Signal Stuck Lean Bank 1 Sensor 2 Read more: https://www.autocodes.com/p2270_gmc.html
33.7k questions
32.5k answers
1.3k comments
23.0k users