Quote Quoting CVC 22100. Turning Upon a Highway
Except as provided in Section 22100.5 or 22101, the driver of any vehicle intending to turn upon a highway shall do so as follows:[indent](a) Right Turns. Both the approach for a right-hand turn and a right-hand turn shall be made as close as practicable to the right-hand curb or edge of the roadway except:
(1) Upon a highway having three marked lanes for traffic moving in one direction that terminates at an intersecting highway accommodating traffic in both directions, the driver of a vehicle in the middle lane may turn right into any lane lawfully available to traffic moving in that direction upon the roadway being entered.

(2) If a right-hand turn is made from a one-way highway at an intersection, a driver shall approach the turn as provided in this subdivision and shall complete the turn in any lane lawfully available to traffic moving in that direction upon the roadway being entered.

(3) Upon a highway having an additional lane or lanes marked for a right turn by appropriate signs or markings, the driver of a vehicle may turn right from any lane designated and marked for that turning movement.
(b) Left Turns. The approach for a left turn shall be made as close as practicable to the left-hand edge of the extreme left-hand lane or portion of the roadway lawfully available to traffic moving in the direction of travel of the vehicle and, when turning at an intersection, the left turn shall not be made before entering the intersection. After entering the intersection, the left turn shall be made so as to leave the intersection in a lane lawfully available to traffic moving in that direction upon the roadway being entered, except that upon a highway having three marked lanes for traffic moving in one direction that terminates at an intersecting highway accommodating traffic in both directions, the driver of a vehicle in the middle lane may turn left into any lane lawfully available to traffic moving in that direction upon the roadway being entered.
I suspect you're correct that the officer cited the wrong statute, as I'm not seeing from what you posted that you violated the statute for which the citation was issued. You could attempt to defend against the charge cited, and hope that the court does not permit amendment of the charge.
Quote Quoting CVC 21801. Left-Turn or U-Turn
(a) The driver of a vehicle intending to turn to the left or to complete a U-turn upon a highway, or to turn left into public or private property, or an alley, shall yield the right-of-way to all vehicles approaching from the opposite direction which are close enough to constitute a hazard at any time during the turning movement, and shall continue to yield the right-of-way to the approaching vehicles until the left turn or U-turn can be made with reasonable safety.

(b) A driver having yielded as prescribed in subdivision (a), and having given a signal when and as required by this code, may turn left or complete a U-turn, and the drivers of vehicles approaching the intersection or the entrance to the property or alley from the opposite direction shall yield the right-of-way to the turning vehicle.
I expect the officer would try to argue that the truck had right of way and was close enough to constitute a hazard had the driver chosen to try to exercise his right of way. That is, if he's given it that much thought. But as previously noted, you're not charged with violating this statute, and in order to be charged with violating it the existing ticket would need to be amended, or dismissed and refiled.