P0122 Acura - Throttle Position Sensor 'A' Circuit Low Voltage
- 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).
- Engine Light ON (or Service Engine Soon Warning Light)
P0122 Acura 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.
ACURA Technical Service Bulletins for P0122 code
2002 ACURA RSX Vehicle Speed Control Details
2003 ACURA RSX Vehicle Speed Control Details
2004 ACURA RSX Vehicle Speed Control Details
2005 ACURA RSX Vehicle Speed Control Details
2002 ACURA RSX 180000 Vehicle Speed Control Details
2003 ACURA RSX 180000 Vehicle Speed Control Details
2004 ACURA RSX 180000 Vehicle Speed Control Details
2005 ACURA RSX 180000 Vehicle Speed Control Details
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