P0122 2018 Toyota RAV4 Code - Throttle / Pedal Position Sensor / Switch 'A' Circuit Low 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
- P0122 2018 Toyota RAV4 indicates Throttle / Pedal Position Sensor / Switch 'A' Circuit Low 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 P0122 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 P0122 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 P0122 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 P0122 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 P0122 2018 Toyota RAV4 Code
1. What does OBDII code P0122 for a 2018 Toyota RAV4 indicate?
- This code refers to an issue with the Throttle/Pedal Position Sensor/Switch 'A' Circuit, specifically a low input signal.
2. What are the common symptoms of a P0122 trouble code in a Toyota RAV4?
- Common symptoms include reduced engine power, unresponsive throttle, stalling, and the vehicle going into a limp mode.
3. What are the possible causes of a P0122 code in a 2018 Toyota RAV4?
- The code may be triggered by a faulty throttle position sensor, damaged wiring or connectors, a defective accelerator pedal position sensor, or issues with the vehicle's ECM.
4. How serious is a P0122 fault code in a Toyota RAV4?
- While the vehicle may still be operable in some cases, driving with a P0122 code can lead to performance issues, reduced fuel efficiency, and potential safety concerns.
5. Can I continue driving my Toyota RAV4 with a P0122 code?
- It is not recommended to drive the vehicle with a P0122 code as it can affect engine performance and may lead to further damage if left unresolved.
6. How can I diagnose and repair a P0122 code in my 2018 Toyota RAV4?
- Diagnosis typically involves checking the throttle position sensor, inspecting wiring for damage, and testing related components. Repairs may involve sensor replacement, wiring repairs, or ECM reprogramming.
7. Is it possible to reset a P0122 trouble code in a Toyota RAV4?
- While clearing the code may temporarily turn off the check engine light, the issue causing the code will need to be addressed to prevent it from reoccurring.
8. Can a DIY enthusiast fix a P0122 code in a Toyota RAV4?
- Some aspects of diagnosing and repairing a P0122 code can be tackled by experienced DIYers with the right tools and knowledge. However, complex issues may require professional assistance.
9. How much does it cost to repair a P0122 code in a 2018 Toyota RAV4?
- The cost of repairing a P0122 code can vary depending on the underlying cause, parts required, and labor costs. It's advisable to obtain quotes from reputable mechanics or repair shops.
10. How can I prevent a P0122 trouble code from occurring in my Toyota RAV4?
- Regular maintenance, such as checking and replacing sensors as needed, keeping wiring connections secure, and addressing any engine issues promptly, can help prevent the recurrence of a P0122 code.
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