The vote came after Public Accounts Committee chairman and Rarieda MP Nicholas Gumbo tabled a report on the controversial hiring of a private jet for DP Ruto in 2013.
Following the findings, PAC had recommended that Keittany and four senior staff be held responsible for the procurement of the jet for at a cost of Sh100 million.
Last week, Keittany was grilled at the Ethics and Anti-Corruption Commission for various graft allegations.
Keittany, who was mentioned in the EACC graft list tabled in Parliament by President Uhuru Kenyatta, was accused of irregularly spending another Sh100 million to renovate Ruto’s office.
She was accused of making the decision unilaterally.
With the rejection of the report, Keittany and the four senior officials implicated in the matter are now off-the-hook.