Scanner reads the following codes PO171-bank 1 to lean, PO172-bank 1 to rich, PO174-bank 2 to lean, PO-175-bank 2 to rich, P2187-bank 1 to lean, P2188-bank 1 to rich, P2189-to lean at idle, P2199- to rich at idle. Replaced air filter, checked for vacuum leaks(none)and cleaned throttle body and MAF sensor, not sure where to go from there, any help would be greatly appreciated.
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2006 Kia Sedona Question: Code scan says Banks 1&2 are running lean&rich same time, any sugg. on fixing.
Greg's Orange Auto (13211 Answers) , Orange, CA - (714) 361-9386globalhelper November 18, 2013, 12:27Master
LOOK FOR VACCUM LEAK AT INTAKE MANIFOLD AREA
Replyejf6109, November 22, 2013, 13:49Rookie
First, thanks for info, found a cracked vacuum hose, changed out cleared codes, took for ride check engine light came back on, showing codes P0171, P0174, P2187 and P2189, all say Bank 1 & 2 running lean now, any other suggestions on this.
Answer #2cardocIII from Gillespie's Auto Service, November 18, 2013, 14:00Master
Check the cannister purge valve for sticking open. When there are fuel vapors to draw, it can make the engine too rich, when there are no vapors to draw it can make the engine too lean (vacuum leak).