I have a customer with a Hyster H80XM, Serial# L005V02859B. Has 4.3 GM V6. Unit runs on LPG. The unit while idling will drop to around 200-300 rpms then stall. Will start right back up every time and run fine. Check engine light comes and goes. I shorted A and D terminals on diagnostic plug and found codes 166 and 244. I believe I found what the 244 code is, Adaptive Learn Low LPG. The code list I have does not show a 166. I am hoping someone can help me with these codes. I can go from there. Any help will be greatly appreciated.
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