P2122 2016 Toyota RAV4 Code - Throttle Pedal Position Sensor/Switch 'D' Circuit Input Low
Quick Answer
The Accelerator Pedal Position (APP) sensor is built into the accelerator pedal sensor assembly and has 2 sensor circuits: VPA (main) and VPA2 (sub). Common causes include Faulty Accelerator Pedal Position (APP) Sensor, Accelerator Pedal Position Sensor harness is open or shorted, Accelerator Pedal Position Sensor circuit 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
- P2122 2016 Toyota RAV4 indicates Throttle Pedal Position Sensor/Switch 'D' Circuit Input Low.
- Common causes
- Common causes include Faulty Accelerator Pedal Position (APP) Sensor, Accelerator Pedal Position Sensor harness is open or shorted, Accelerator Pedal Position Sensor circuit 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 P2122 2016 Toyota RAV4 Description
The ECM monitors the actual accelerator pedal opening angle (throttle valve opening angle) through the signals from VPA and VPA2 and controls the throttle actuator according to these signals.
When either the output voltage of VPA or VPA2 deviates from the standard range, or the difference between the output voltages of the 2 sensor circuits is more than the threshold, the ECM determines that there is a malfunction in the accelerator pedal position sensor. The ECM then illuminates the MIL and stores a Diagnostic Trouble Code (DTC).
What are the Possible Causes of the DTC P2122 2016 Toyota RAV4?
- Faulty Accelerator Pedal Position (APP) Sensor
- Accelerator Pedal Position Sensor harness is open or shorted
- Accelerator Pedal Position Sensor circuit poor electrical connection
- Faulty Engine Control Module (ECM)
How to Fix the DTC P2122 2016 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.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P2122 2016 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 P2122 2016 Toyota RAV4 Code
1. What does the OBDII code P2122 mean on a 2016 Toyota RAV4?
P2122 indicates that the throttle pedal position sensor/switch "D" circuit is reporting a low voltage input, which could affect the vehicle's acceleration and throttle control.
2. What are the symptoms of code P2122 in a 2016 Toyota RAV4?
Common symptoms include poor acceleration, the engine going into limp mode, an illuminated check engine light, and inconsistent throttle response.
3. What causes the P2122 code to appear on a 2016 Toyota RAV4?
Potential causes include a faulty throttle pedal position sensor, damaged wiring or connectors, a short circuit, or issues with the vehicle’s Engine Control Module (ECM).
4. Can I drive my 2016 Toyota RAV4 with a P2122 code?
Driving with a P2122 code is not recommended, as the vehicle may enter limp mode, reducing performance and potentially causing unsafe driving conditions.
5. How do I diagnose the P2122 code on a 2016 Toyota RAV4?
Diagnosis typically involves checking the throttle pedal position sensor for proper operation, inspecting wiring and connectors for damage, and using a scan tool to monitor sensor voltage.
6. How do I fix the P2122 code on a 2016 Toyota RAV4?
Repairs may include replacing the throttle pedal position sensor, repairing damaged wiring or connectors, or reprogramming or replacing the ECM if necessary.
7. How much does it cost to fix code P2122 on a 2016 Toyota RAV4?
The repair cost varies but typically ranges from $100 to $400 depending on whether the issue is with the sensor, wiring, or ECM.
8. Can a dirty throttle body cause a P2122 code on a 2016 Toyota RAV4?
A dirty throttle body is unlikely to directly cause P2122, but it can contribute to throttle-related issues. Cleaning it as part of routine maintenance is a good practice.
9. Does the throttle pedal position sensor need calibration after replacement on a 2016 Toyota RAV4?
In some cases, the sensor may require recalibration using a scan tool to ensure proper operation after replacement.
10. What tools are needed to diagnose or fix the P2122 code on a 2016 Toyota RAV4?
You’ll need a basic OBDII scanner, a multimeter to test voltage and continuity, and possibly a repair manual for wiring diagrams and specifications.
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