AutoCodesToyota – P2102 2001 Toyota Highlander

P2102 2001 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 2001 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 2,242
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Feb 28, 2019
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Code P2102 2001 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 2001 Toyota Highlander - Throttle Actuator Control Motor Circuit Low - AutoCodes.com
P2102 2001 Toyota Highlander Code - Throttle Actuator Control Motor Circuit Low

What are the Possible Causes of the DTC P2102 2001 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 2001 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 2001 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 2001 Toyota Highlander 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 2001 Toyota Highlander Code

1. What does the OBDII code P2102 mean for a 2001 Toyota Highlander?

P2102 indicates a problem with the throttle actuator control motor circuit, specifically a low voltage or resistance issue.

2. What are the common symptoms of code P2102 in a 2001 Toyota Highlander?

Symptoms may include reduced engine power, poor acceleration, the throttle not responding properly, and the check engine light turning on.

3. What causes the P2102 code to appear in a 2001 Toyota Highlander?

Common causes include a faulty throttle actuator control motor, damaged wiring or connectors in the circuit, a defective throttle body, or a malfunctioning engine control module (ECM).

4. Can I drive my 2001 Toyota Highlander with a P2102 code?

Driving with a P2102 code is not recommended as it can lead to reduced power and potential safety concerns. It's best to address the issue promptly.

5. How do I diagnose a P2102 code on my 2001 Toyota Highlander?

Diagnosis involves checking the throttle actuator motor, inspecting the wiring and connectors for damage, and testing the throttle body and ECM for proper operation.

6. How can I fix the P2102 code on a 2001 Toyota Highlander?

Fixes may include repairing or replacing damaged wiring, connectors, or the throttle actuator motor. In some cases, replacing the throttle body or reprogramming the ECM may be necessary.

7. What tools are needed to troubleshoot a P2102 code?

You’ll need an OBDII scanner, a multimeter to test electrical circuits, and potentially a repair manual specific to the 2001 Toyota Highlander.

8. Could a dirty throttle body cause the P2102 code?

While a dirty throttle body is less likely to directly cause P2102, excessive dirt or debris could strain the throttle actuator motor, potentially leading to issues.

9. How much does it cost to repair a P2102 code on a 2001 Toyota Highlander?

Repair costs vary depending on the issue. Replacing the throttle actuator motor can cost $300-$700, while wiring repairs may be less expensive.

10. Does the P2102 code require ECM replacement?

Not always. ECM replacement is only necessary if the ECM is diagnosed as faulty after eliminating other potential causes.

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