P0123 2017 Toyota RAV4 Code - Throttle / Pedal Position Sensor / Switch 'A' Circuit High Input
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
- P0123 2017 Toyota RAV4 indicates Throttle / Pedal Position Sensor / Switch 'A' Circuit High Input.
- 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 P0123 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 P0123 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 P0123 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
User Submitted Video
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P0123 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 P0123 2017 Toyota RAV4 Code
1. What does OBDII code P0123 mean for a 2017 Toyota RAV4?
The code P0123 indicates a potential issue with the Throttle/Pedal Position Sensor/Switch 'A' Circuit, specifically relating to a high input signal.
2. What are the common symptoms of OBDII code P0123 in a 2017 Toyota RAV4?
Common symptoms of P0123 may include issues like reduced engine power, stalling, hesitation during acceleration, or the vehicle going into "limp mode."
3. What are the possible causes of OBDII code P0123 in a 2017 Toyota RAV4?
Potential causes of code P0123 include a faulty throttle position sensor, problems with the pedal position sensor, wiring issues, or a malfunction in the engine control module (ECM).
4. How can I diagnose the OBDII code P0123 in my 2017 Toyota RAV4?
To diagnose P0123, you can use an OBDII scanner to read the code and then further inspect the throttle position sensor, pedal position sensor, and related wiring for any visible damage or issues.
5. Can I still drive my 2017 Toyota RAV4 with OBDII code P0123?
It is not recommended to drive your vehicle with code P0123 as it can cause performance issues and potentially lead to further damage. It is best to address the problem promptly.
6. How can I repair OBDII code P0123 in my 2017 Toyota RAV4?
Repairing P0123 may involve replacing the throttle position sensor, pedal position sensor, or repairing any damaged wiring. In some cases, resetting the ECM may also be necessary.
7. Is it safe to reset the ECM to clear OBDII code P0123 in my 2017 Toyota RAV4?
Resetting the ECM to clear the code is safe, but it may not resolve the underlying issue causing P0123. It's important to diagnose and address the root cause of the problem.
8. Can a DIY enthusiast fix OBDII code P0123 in a 2017 Toyota RAV4?
Depending on your expertise, you may be able to replace the throttle or pedal position sensor yourself. However, diagnosing and repairing wiring issues or ECM problems may require professional help.
9. How much does it cost to repair OBDII code P0123 in a 2017 Toyota RAV4?
The cost of repairing P0123 can vary based on the specific cause of the issue, parts needed for replacement, and labor costs. It's advisable to get a diagnostic from a mechanic for an accurate estimate.
10. Will OBDII code P0123 affect the fuel efficiency of my 2017 Toyota RAV4?
Yes, code P0123 can impact fuel efficiency as it may cause irregular engine performance, leading to inefficient fuel combustion. Addressing the issue promptly can help improve fuel economy.
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