Engine light on code read system lean bank 2

Question

Engine light on read system 2 lean bank 2. The o2 sensors were changed the upstream but engine light came back on

Answer 1

HI there

When this happens the rear sensor could also cause the issue. Plus, you need to check for any possible intake leaks on bank 2 or exhaust leaks. The mass air flow sensor can also cause this code to appear. Here is some more info that might help you out.

P0174 - System Too Lean Bank 2

Read more: https://www.autocodes.com/p0174.html