(2011 GT) VCT's not changing

I recently built a coyote for a buddy and his tuner is complaining about the cams not moving on the log. The VCT's on the log stay at or around 0. It has thrown a code once Po0012 for itake camshaft overadvanced. The car runs pretty damn good even with this issue. It's really hard to believe that it could be a tooth off on one of the chains with as good as it runs but I guess anything is possible. Verified good oil pressure, tripple checked all harness connections, verified all ecu grounds, voltage at the VCT solenoids but no grounds. I'm assuming the ecu varies the ground but my voltmeter isnt fast enough to keep up.
Anyone had an issue similar to this?
Anyone had an issue similar to this?