Githinji, Nicholas Makokha – who was then chief inspector of NYS – and Geoffrey Kiriha, the then senior superintendent mechanic, however denied the charges before a Nairobi court.
Githinji faced an additional charge of fraudulent acquisition of public property.
Kiriha and Makokha are accused of using their positions to help Githinji confer a benefit of Sh497,355 to repair his personal vehicle on June 4, 2014.
The three were released on a Sh200,000 cash bail each with alternative bond of Sh1 million each.
The case will be mentioned on March 3, 2016.