code po261

[roadkingdresser]

2011 road king engine light comes on momentarily,bike doesn't seem to miss or low power. ran the codes -had 1 for front o2 sensor -changed it- put new injector in fr. cyl-checked wire ends at injectors. took plug of ecm and sprayed wire deoxit gx5 in plug and ecm. code reader says check grnd. so which wire would the grnd be? appreciate any help.

[roadkingdresser]

well talked to a moco mechanic today. he asked me if it had a tuner on it,which it does. he told me to disconnect it and take it for a ride. did that and the light never attempted to come on. got in touch with the co. and i'm sending it  back for warranty. ordered another tuner.

[Panzer]

Can't beat that..........diagnosed his own problem and repairs on the way.