P0122 2017 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 2017 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 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 P0122 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 P0122 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 P0122 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 P0122 2017 Toyota RAV4 Code
1. What does OBDII code P0122 mean for a 2017 Toyota RAV4?
P0122 indicates that the Throttle/Pedal Position Sensor/Switch 'A' circuit has a low input signal, meaning the sensor voltage is below the expected range.
2. What are the common symptoms of code P0122 in a 2017 Toyota RAV4?
Symptoms may include poor acceleration, rough idling, stalling, reduced fuel efficiency, and the Check Engine Light being illuminated.
3. What causes code P0122 in a 2017 Toyota RAV4?
Common causes include a faulty throttle position sensor, damaged wiring or connectors, a malfunctioning accelerator pedal position sensor, or issues with the vehicle’s PCM (Powertrain Control Module).
4. Can a dirty throttle body cause P0122?
Yes, a dirty throttle body can affect sensor readings and may trigger P0122 due to inconsistent or low input signals.
5. Is it safe to drive a 2017 Toyota RAV4 with code P0122?
Driving with P0122 can lead to reduced performance and potential stalling, which may be unsafe. It’s best to address the issue promptly.
6. How do you diagnose code P0122 in a 2017 Toyota RAV4?
Diagnosis typically involves using an OBDII scanner, checking the throttle position sensor and wiring connections, and inspecting the throttle body for dirt or damage.
7. How is P0122 fixed on a 2017 Toyota RAV4?
Fixes may include cleaning or replacing the throttle position sensor, repairing wiring or connectors, cleaning the throttle body, or addressing PCM issues.
8. Can a bad accelerator pedal position sensor trigger P0122?
Yes, a malfunctioning accelerator pedal position sensor can cause incorrect input signals, leading to P0122.
9. How much does it cost to repair code P0122 for a 2017 Toyota RAV4?
Repair costs vary but typically range from $100 to $300 for parts and labor, depending on whether the sensor needs replacement or if wiring repairs are needed.
10. Can a loose electrical connection cause P0122?
Yes, loose or damaged wiring and connectors can disrupt signal transmission, resulting in P0122 being triggered.
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