P0172 Chrysler - I replaced fuel injector and 2 days later light back on, now what?

Question

I recently bought a used 2004 Chrysler Sebring. Check engine light came on and mechanic replaced burned up fuel injector, spark plugs, and computer. It ran great for two days. it still running great but engine light is back on with p0172 code. Now what??

Answer 1

Hi there,

The front O2 sensor on bank 1 can cause a rich mixture and this code. It's reporting what it's seeing, but sometimes it's the cause as well.