My 05 v8 Ls went into failsafe mode at a dead stop and also said service parking brake. I restarted he car and it went out of failsafe mode so I drove it home to pull any possible codes (no MIL’s illuminated). When I read the codes I pulled four pending codes all related to the throttle actuator control system. The codes are p2106, p2104, p2111, and p2135. Any idea what might be causing this?