Hello, we have a Komatsu FG20ST-14 lift in the shop and rarely service Komatsu's better yet the newer models (this is the first one I've seen in the shop in almost a year). It's showing 3 flashes on the dash as soon as the ignition is turned on. We went into diagnostic mode via the pedal shuffle & get 10 flashes repeating. The O2 sensor was recently replaced. Any help would be appreciated.
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