Possible causes

– Faulty throttle position sensor.
– Throttle position sensor harness is open or shorted
– Throttle position sensor circuit poor electrical connection

When is the code detected?

An excessively low voltage from the Throttle Position Sensor (TPS) is sent to Engine Control Module (ECM).

Symptoms

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

P0122 Description

The throttle position sensor (TPS) responds to the accelerator pedal movement. This sensor is a kind of potentiometer which transforms the throttle position into output voltage, and emits the voltage signal to the Engine Control Module (ECM). In addition, the sensor detects the opening and closing speed of the throttle valve and feeds the voltage signal to the ECM.
Idle position of the throttle valve is determined by the ECM receiving the signal from the throttle position sensor. This sensor controls engine operation such as fuel cut. On the other hand, the Wide open and closed throttle position switch, which is built into the throttle position sensor unit, is not used for engine control.

P0122 Information for specific makes

P0122 INFINITI
P0122 NISSAN
P0122 ACURA
P0122 HONDA
P0122 BMW
P0122 CHRYSLER
P0122 DODGE
P0122 JEEP
P0122 FORD
P0122 HYUNDAI
P0122 ISUZU
P0122 KIA
P0122 LEXUS
P0122 TOYOTA
P0122 MAZDA
P0122 MITSUBISHI
P0122 SUBARU
P0122 VOLKSWAGEN
P0122 AUDI
P0122 SCION
P0122 JAGUAR
P0122 2002 JEEP LIBERTY
P0122 2003 JEEP LIBERTY
P0122 2004 JEEP LIBERTY
P0122 2005 JEEP LIBERTY
P0122 2006 JEEP LIBERTY
P0122 OLDSMOBILE
P0122 BUICK
P0122 CADILLAC
P0122 CHEVROLET
P0122 GMC
P0122 PONTIAC
P0122 SATURN