Possible causes

– Faulty Electric Throttle Control (ETC) Actuator
– Electric Throttle Control (ETC) Actuator harness is open or shorted
– Electric Throttle Control (ETC) Actuator circuit poor electrical connection

Symptoms

– Engine Light ON (or Service Engine Soon Warning Light)

P2101 Information for specific makes

P2101 ACURA
P2101 DODGE
P2101 HONDA
P2101 INFINITI
P2101 NISSAN
P2101 BUICK
P2101 CADILLAC
P2101 CHEVROLET
P2101 GMC
P2101 PONTIAC
P2101 SATURN
P2101 CHRYSLER
P2101 JEEP
P2101 HUMMER