P1120 MAZDA Possible Causes
- Faulty throttle position sensor
- Throttle position sensor harness is open or shorted
- Poor electrical connection in throttle position sensor circuit
- Improperly adjusted throttle position sensor
How to Fix P1120 MAZDA Code?
Start by checking the “Possible Causes” listed above. Visually inspect the corresponding wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.
When is the Code Detected?
A malfunction is detected when the sensor voltage sent to the Engine Control Module (ECM) is out of range.
Possible Symptoms
Illuminated check engine light (or service engine soon warning light)
P1120 MAZDA Meaning
The Throttle Position Sensor (TPS) responds to throttle pedal movement. This sensor is a type of potentiometer that transforms throttle position into output voltage and transmits the voltage signal to the Engine Control Module (ECM). Additionally, the sensor detects the opening and closing speed of the throttle valve and transmits the voltage signal to the ECM.