P1120 Toyota Code - Accelerator Pedal Position Sensor Circuit Malfunction
Quick Answer
Accelerator pedal position sensor is mounted on the throttle body and it has the 2 sensors to detects the accelerator position and a malfunction of the accelerator position’s own. Common causes include Faulty Accelerator Pedal Position Sensor, Accelerator Pedal Position Sensor harness is open or shorted, Accelerator Pedal Position Sensor circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- P1120 Toyota indicates Accelerator Pedal Position Sensor Circuit Malfunction.
- Common causes
- Common causes include Faulty Accelerator Pedal Position Sensor, Accelerator Pedal Position Sensor harness is open or shorted, Accelerator Pedal Position Sensor circuit poor electrical connection.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
Code P1120 Toyota Description
The accelerator pedal position sensor is connected with the accelerator pedal by the accelerator wire and the voltage applied to the terminals VPA and VPA2 of the Engine Control Moduel (ECM) changes between 0 V and 5 V in proportion to the opening angle of the accelerator pedal.
The ECM judges the current opening angle of the accelerator pedal from these signals input from terminals VPA and VPA2 and the ECM controls the throttle motor based on these signals.
If the the P1120 code is stored, the ECM shuts down the power for the throttle motor and the magnetic clutch, and the throttle valve is fully closed by the return spring.
However, the opening angle of the throttle valve can be controlled by the accelerator pedal through the throttle cable
What are the Possible Causes of the DTC P1120 Toyota?
- Faulty Accelerator Pedal Position Sensor
- Accelerator Pedal Position Sensor harness is open or shorted
- Accelerator Pedal Position Sensor circuit poor electrical connection
How to Fix the DTC P1120 Toyota?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
Code Tech Notes
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P1120 Toyota code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
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Information for Specific Toyota Models
- P1120 2004 Toyota Prius — Coolant Flow Control Valve Position Sensor Circuit
- P1120 2005 Toyota Prius — Coolant Flow Control Valve Position Sensor Circuit
- P1120 2006 Toyota Prius — Coolant Flow Control Valve Position Sensor Circuit
- P1120 2007 Toyota Prius — Coolant Flow Control Valve Position Sensor Circuit
- P1120 2008 Toyota Prius — Coolant Flow Control Valve Position Sensor Circuit
- P1120 2009 Toyota Prius — Coolant Flow Control Valve Position Sensor Circuit
Frequently Asked Questions about P1120 Toyota Code
No Frequently Asked Questions about P1120 Toyota Code found.
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