AutoCodes – Toyota – P2109 2018 Toyota RAV4

P2109 2018 Toyota RAV4 Code - Throttle / Pedal Position Sensor 'A' Minimum Stop Performance

Quick Answer

The idling speed is controlled by the Electronic Throttle Control System (ETCS). Common causes include Faulty Throttle with Motor Body Assembly, Throttle with Motor Body Assembly harness is open or shorted, Throttle with Motor Body Assembly 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: P2109 2018 Toyota RAV4 indicates Throttle / Pedal Position Sensor 'A' Minimum Stop Performance.
Common causes: Common causes include Faulty Throttle with Motor Body Assembly, Throttle with Motor Body Assembly harness is open or shorted, Throttle with Motor Body Assembly 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.

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Code Popularity 544

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

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Table of contents Created and updated by William Orellana on Sep 16, 2022

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P2109 2018 Toyota RAV4 Description

The idling speed is controlled by the Electronic Throttle Control System (ETCS). The ETCS is comprised of a throttle actuator, which operates the throttle valve, and a throttle position sensor, which detects the opening amount of the throttle valve. The Engine Control Module (ECM) controls the throttle actuator to adjust the throttle valve opening amount so that the idling speed is maintained at the target idling speed. The Diagnostic Trouble Code (DTC) will be set with the manifold absolute pressure sensor normal and atmospheric pressure 85 kPa (638 mmHg) or more (elevation 1400 m (4592 ft.) or less), when the engine coolant temperature is 45°C (113°F) or less at engine start, the engine is warmed up and conditions for Idle Speed Control (ISC) learning are met, the ISC learning value is approximately 3 times larger than normal even though the intake manifold pressure when idling is normal.

OBDII Code P2109 2018 Toyota RAV4 - Throttle / Pedal Position Sensor 'A' Minimum Stop Performance - AutoCodes.com — P2109 2018 Toyota RAV4 Code - Throttle / Pedal Position Sensor 'A' Minimum Stop Performance

What does this mean?

What are the Possible Causes of the DTC P2109 2018 Toyota RAV4?

Faulty Throttle with Motor Body Assembly
Throttle with Motor Body Assembly harness is open or shorted
Throttle with Motor Body Assembly circuit poor electrical connection

How to Fix the DTC P2109 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.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P2109 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.

Need more information about the P2109 2018 Toyota RAV4 code?

Need more information on how to fix the P2109 2018 Toyota RAV4 code? Get Access to Factory Service Manuals

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P2109 2018 Toyota RAV4 Code

1. What does the OBDII code P2109 mean for a 2018 Toyota RAV4?

P2109 indicates an issue with the Throttle/Pedal Position Sensor 'A' Minimum Stop Performance, meaning the throttle body is not operating within the expected range for the minimum stop position.

2. What are the common symptoms of code P2109 in a 2018 Toyota RAV4?

Symptoms may include reduced engine performance, hesitation during acceleration, an illuminated Check Engine Light, and the vehicle entering limp mode.

3. What causes the P2109 code to appear in a Toyota RAV4?

Common causes include a faulty throttle body, a malfunctioning Throttle Position Sensor (TPS), wiring or connector issues, carbon buildup in the throttle body, or a problem with the Engine Control Module (ECM).

4. Can I drive my 2018 Toyota RAV4 with a P2109 code?

It is not recommended to drive for long with this code, as it can lead to reduced engine performance and potentially unsafe driving conditions, especially if the vehicle enters limp mode.

5. How do I diagnose the P2109 code on a Toyota RAV4?

Diagnosis involves using an OBDII scanner to confirm the code, inspecting the throttle body and TPS for physical damage or debris, checking for wiring or connector issues, and testing the TPS and throttle motor for proper function.

6. What repairs can fix the P2109 code in a 2018 Toyota RAV4?

Repairs may include cleaning the throttle body, replacing the Throttle Position Sensor, repairing or replacing damaged wiring or connectors, or, in some cases, replacing the throttle body assembly.

7. How much does it cost to fix a P2109 code on a Toyota RAV4?

Repair costs vary depending on the issue, but throttle body cleaning might cost $100-$200, while replacing the throttle body or TPS could range from $300-$800.

8. Can a dirty throttle body trigger the P2109 code in a Toyota RAV4?

Yes, carbon buildup or dirt in the throttle body can interfere with its operation, potentially causing the minimum stop position to fall outside the expected range.

9. Does the P2109 code always mean the throttle body needs to be replaced?

No, the throttle body does not always need replacing. The issue could be due to wiring, connectors, or a malfunctioning TPS, which may be repairable without full replacement.

10. How can I prevent the P2109 code from occurring again in my Toyota RAV4?

Regular maintenance, such as cleaning the throttle body and inspecting the wiring and connectors for damage, can help prevent this issue from reoccurring.