P219a GMC Acadia

Question

I recently had cylinder 1 & cylinder 5 changed now check engine light is on what could have gone wrong?

Answer 1

HI there

This code is for an air fuel ratio imbalance on bank 1. Here is some more info on possible causes for the code.

P219A - Bank 1 Air/Fuel Ratio Imbalance

Read more: https://www.autocodes.com/p219a.html