With the wide range of possibilities, the problems listed may and may not be present. The strategy dictates that the driveability problems are observed and noted, then start with the most commonly found problems and progress from there. For the most part the diagnostic procedure is not difficult - just time consuming, unless it is one of the first items checked. There is a laundry list of components that could cause this scenario. Code P2189 is the same code but for Bank #2. If you have a 4 cylinder engine the "Bank 1" is meaningless, however, if you have a 6 or 8 cylinder engine, Bank 1 will be on the side with the number one cylinder. It appears that the fuel mixture is too lean (too much air and not enough fuel) at an idle. During the last two starts, the engine management computer has recognized a problem with the fuel mixture at an idle. It can be a tough code to crack without a diagnostic strategy. We have seen this code on Hyundai, Dodge, and other models. It is considered generic because it applies to all makes and models of vehicles (1996-newer), although specific repair steps may be slightly different depending on the model. This diagnostic trouble code (DTC) is a generic powertrain code. System Too Lean at Idle (Bank 1) What does that mean?
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