sidaCommunity MemberNovember 14, 2021 at 9:17 pm
I recently bought a Kia Forte 2010 2.0. 30 minutes after driving off from the seller, the check engine light came on.
Code P2191: Lean at higher load bank 1.
I replaced the upper O2 sensor, the map sensor and the PCV valve.
I took a look at the sparkplugs, and they were all a little white.
I have also tried looking for vacuum leaks, by holding a hand to the throttle body, which killed the engine – therefore I suspect no vacuum leaks?
The engine does not misfire, it starts right up and runs smoothly – the only signs of it running lean is the lack of power and the CEL.
If I get directly on to the highway within 10 miles, the CEL will not come on.
If I drive around town for 10-15 miles it comes on, when the engine gets warm.
If it is already warm and i drive around town the CEL will not come on.
Maybe you can help determine what the cause could be?
Best regards the frustrated amateur mechanic
Engine: 2.0MSelleenAdministratorNovember 16, 2021 at 12:23 am
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