DTC P1122: Throttle Position (TP) Sensor Signal Higher Than Expected
WARNING: This page is about a different car, the 2004 Acura 3.5RL, 2003 Acura 3.5RL, 2002 Acura 3.5RL, and 2001 Acura 3.5RL. However, it is still accessible from the selected car via links, so may be relevant.
Turn ignition switch ON (II). Using scan tool, check throttle position. If throttle position is 19.1% or less when throttle is fully closed, problem is intermittent. System is okay at this time. If throttle position is not 19.1% or less when throttle is fully closed, replace TP sensor.