AutoCodes – Toyota – P2102 2006 Toyota Highlander

P2102 2006 Toyota Highlander Code - Throttle Actuator Control Motor Circuit Low

Quick Answer

The throttle actuator is operated by the Engine Control Module (ECM) and it opens and closes the throttle valve. Common causes include Dirty throttle body, Faulty Throttle Actuator Control Motor, Throttle Actuator Control Motor harness is open. 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: P2102 2006 Toyota Highlander indicates Throttle Actuator Control Motor Circuit Low.
Common causes: Common causes include Dirty throttle body, Faulty Throttle Actuator Control Motor, Throttle Actuator Control Motor harness is open.
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 2,998

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

What is this?

Table of contents Created and updated by William Orellana on Feb 28, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P2102 2006 Toyota Highlander Description

The throttle actuator is operated by the Engine Control Module (ECM) and it opens and closes the throttle valve. Power supply for the throttle control motor is provided to the ECM via throttle control motor relay. The throttle control motor relay is ON/OFF controlled by the ECM. When the ignition switch is turned ON, the ECM sends an ON signal to throttle control motor relay and battery voltage is provided to the ECM. When the ignition switch is turned OFF, the ECM sends an OFF signal to throttle control motor relay and battery voltage is not provided to the ECM. The opening angle of the throttle valve is detected by the throttle position sensor which is mounted on the throttle body. The throttle position sensor provides feedback to the ECM. This feedback allows the ECM to control the throttle actuator and monitor the throttle opening angle in response to driver inputs.

OBDII Code P2102 2006 Toyota Highlander - Throttle Actuator Control Motor Circuit Low - AutoCodes.com — P2102 2006 Toyota Highlander Code - Throttle Actuator Control Motor Circuit Low

What does this mean?

What are the Possible Causes of the DTC P2102 2006 Toyota Highlander?

Dirty throttle body
Faulty Throttle Actuator Control Motor
Throttle Actuator Control Motor harness is open
Throttle Actuator Control Motor circuit poor electrical connection
Faulty Engine Control Module (ECM)

How to Fix the DTC P2102 2006 Toyota Highlander?

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 P2102 2006 Toyota Highlander 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 P2102 2006 Toyota Highlander code?

Need more information on how to fix the P2102 2006 Toyota Highlander code? Get Access to Factory Service Manuals

Need Help with the Code?

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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 P2102 2006 Toyota Highlander Code

1. What does the OBDII code P2102 mean on a 2006 Toyota Highlander?

P2102 indicates that the Throttle Actuator Control (TAC) Motor Circuit has a low voltage or malfunction, which can impact the throttle's operation.

2. What are the common symptoms of code P2102 in a 2006 Toyota Highlander?

Common symptoms include reduced engine power, poor acceleration, the throttle not responding properly, and the check engine light being illuminated.

3. What causes the P2102 code in a 2006 Toyota Highlander?

Potential causes include a faulty throttle actuator motor, damaged wiring or connectors in the throttle actuator circuit, a blown fuse, or a malfunctioning Engine Control Module (ECM).

4. Can I drive my 2006 Toyota Highlander with a P2102 code?

Driving with a P2102 code is not recommended, as it can lead to reduced performance or sudden loss of throttle control, which could be unsafe.

5. How do I diagnose the P2102 code in my 2006 Toyota Highlander?

Diagnosis involves using a scan tool to check for related codes, inspecting the throttle actuator motor and its wiring, and testing voltage and continuity in the circuit.

6. How do I fix the P2102 code on a 2006 Toyota Highlander?

Repairs may include replacing the throttle actuator motor, repairing or replacing damaged wiring or connectors, or replacing the fuse associated with the throttle actuator circuit.

7. Could a bad throttle body cause the P2102 code?

Yes, a malfunctioning throttle body, including its motor or internal components, could cause the P2102 code to trigger.

8. How much does it cost to repair a P2102 code in a 2006 Toyota Highlander?

Repair costs vary but can range from $100 to $700 depending on whether the issue is wiring-related or requires throttle body replacement.

9. Can a dirty throttle body trigger the P2102 code?

A dirty throttle body is unlikely to cause P2102 specifically, but it may lead to other issues affecting throttle performance. Cleaning it might still help in some cases.

10. Does a blown fuse cause the P2102 code in a 2006 Toyota Highlander?

Yes, a blown fuse in the throttle actuator circuit can cause the P2102 code by cutting off power to the throttle actuator motor.