P0120 2017 Toyota RAV4 Code - Throttle / Pedal Position Sensor / Switch 'A' Circuit Malfunction
Quick Answer
The throttle position sensor is mounted on the throttle with motor body assembly and detects the opening angle of the throttle valve. Common causes include Faulty Throttle Position Sensor (built into Throttle Body Assembly), Throttle Position Sensor circuit is open or shorted, Throttle Position Sensor 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
- P0120 2017 Toyota RAV4 indicates Throttle / Pedal Position Sensor / Switch 'A' Circuit Malfunction.
- Common causes
- Common causes include Faulty Throttle Position Sensor (built into Throttle Body Assembly), Throttle Position Sensor circuit is open or shorted, Throttle Position Sensor 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 P0120 2017 Toyota RAV4 Description
As the valve closes, the sensor output voltage decreases and as the valve opens, the sensor output voltage increases. The Engine Control Module (ECM) calculates the throttle valve opening angle according to these signals and controls the throttle actuator in response to driver inputs. These signals are also used in calculations such as air-fuel ratio correction, power increase correction, and fuel-cut control.
The ECM uses the throttle position sensor to monitor the throttle valve opening angle. There are several checks that the ECM performs to confirm the proper operation of the throttle position sensor.
This sensor transmits two signals, if the output voltage difference between the two signals deviates from the normal operating range, the ECM interprets this as a malfunction in the throttle position sensor. The ECM illuminates the MIL and stores the Diagnostic Trouble Code (DTC).
What are the Possible Causes of the DTC P0120 2017 Toyota RAV4?
- Faulty Throttle Position Sensor (built into Throttle Body Assembly)
- Throttle Position Sensor circuit is open or shorted
- Throttle Position Sensor poor electrical connection
- Faulty Engine Control Module (ECM)
How to Fix the DTC P0120 2017 Toyota RAV4?
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
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What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P0120 2017 Toyota RAV4 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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Frequently Asked Questions about P0120 2017 Toyota RAV4 Code
What does the OBD-II code P0120 mean on a 2017 Toyota RAV4?
It indicates a malfunction in the "Throttle/Pedal Position Sensor/Switch 'A' Circuit," which monitors the position of the throttle or accelerator pedal.
What are common symptoms of P0120 in a 2017 Toyota RAV4?
Symptoms include reduced engine performance, poor acceleration, delayed throttle response, and the check engine light turning on.
What causes the P0120 code to appear?
Common causes include a faulty throttle position sensor, damaged wiring or connectors, a malfunctioning accelerator pedal position sensor, or issues with the engine control module (ECM).
Can I drive my 2017 Toyota RAV4 with the P0120 code?
Driving with this code is not recommended, as it may lead to poor performance, unsafe driving conditions, or further damage to the vehicle.
How do I diagnose the P0120 code on my 2017 Toyota RAV4?
Use an OBD-II scanner to confirm the code, inspect the throttle position sensor, accelerator pedal position sensor, and wiring for damage or loose connections.
How do I fix the P0120 code on a 2017 Toyota RAV4?
Repairs may include replacing the throttle position sensor, repairing damaged wiring, cleaning connectors, or recalibrating the sensors.
What tools are needed to fix the P0120 code?
Basic tools include an OBD-II scanner, multimeter for testing circuits, and possibly replacement sensors or wiring parts.
How much does it cost to repair the P0120 code on a 2017 Toyota RAV4?
Repair costs vary but can range from $100 to $300, depending on whether parts like sensors need replacement and labor charges.
Can a dirty throttle body cause the P0120 code?
Yes, a dirty throttle body can affect sensor readings and trigger the code. Cleaning the throttle body may help resolve the issue.
Does the P0120 code require sensor recalibration?
In some cases, recalibrating the throttle or pedal position sensors after repair may be necessary to ensure proper function.
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