P0123 2018 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 2018 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 2018 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 2018 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 2018 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 P0123 2018 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 2018 Toyota RAV4 Code
What does the OBDII code P0123 mean for a 2018 Toyota RAV4?
Code P0123 indicates a high voltage input from the Throttle/Pedal Position Sensor 'A' circuit, which may affect throttle control and engine performance.
What are common symptoms of the P0123 code in a 2018 Toyota RAV4?
Symptoms may include poor acceleration, rough idling, hesitation when pressing the gas pedal, reduced fuel efficiency, and the check engine light turning on.
What causes the P0123 code in a 2018 Toyota RAV4?
Common causes include a faulty throttle position sensor, damaged wiring or connectors in the sensor circuit, or issues with the engine control module (ECM).
Can I drive my 2018 Toyota RAV4 with the P0123 code?
Driving with this code is not recommended as it can affect throttle response and lead to unsafe driving conditions. Address the issue promptly.
How do I diagnose the P0123 code in a 2018 Toyota RAV4?
Diagnosis involves using an OBDII scanner to confirm the code, inspecting the throttle position sensor, and checking the wiring and connectors for damage or loose connections.
How do I fix the P0123 code in a 2018 Toyota RAV4?
Repairs may include replacing the throttle position sensor, repairing damaged wiring or connectors, or reprogramming or replacing the ECM if necessary.
Is the P0123 code expensive to repair on a 2018 Toyota RAV4?
Repair costs vary depending on the issue, but replacing a throttle position sensor typically costs $200-$400, including parts and labor.
Can a dirty throttle body cause the P0123 code in a 2018 Toyota RAV4?
A dirty throttle body is unlikely to cause this specific code, but cleaning it can improve throttle response and eliminate other potential issues.
How can I prevent the P0123 code in my 2018 Toyota RAV4?
Regular maintenance, including inspecting wiring and sensors, keeping the throttle body clean, and addressing issues promptly, can help prevent this code.
Will clearing the P0123 code with an OBDII scanner fix the issue?
Clearing the code may turn off the check engine light temporarily, but the underlying problem must be resolved to prevent the code from returning.
Discuss the causes and fixes for P0123 2018 Toyota RAV4 OBDII Code
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