DTC P1121: Throttle Position (TP) Lower Than Expected

Turn ignition on. Using scan tool, check TP sensor data. If throttle position is 16.1 percent or more on MDX or 13.7 percent or more on 3.2CL and 3.2TL when throttle is fully opened, problem is intermittent. System is okay at this time. If throttle position is not as specified, replace TP sensor (on some models, TP sensor is not serviced separately from throttle body).