AutoCodes – Chevrolet – P2102 Chevrolet

P2102 Chevrolet Code - Throttle Actuator Control Motor Control Circuit Low Voltage

Quick Answer

The Engine Control Module (ECM) is the control center for the throttle body Throttle Actuator Control (TAC) system. Common causes include Faulty Throttle Body Assembly, Throttle Body Assembly harness is open or shorted, Throttle 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: P2102 Chevrolet indicates Throttle Actuator Control Motor Control Circuit Low Voltage.
Common causes: Common causes include Faulty Throttle Body Assembly, Throttle Body Assembly harness is open or shorted, Throttle 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 1,915

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Dec 27, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P2102 Chevrolet Description

The Engine Control Module (ECM) is the control center for the throttle body Throttle Actuator Control (TAC) system. The ECM determines the driver's intent and then calculates the appropriate throttle response. The ECM achieves throttle positioning by providing a pulse width modulated voltage to the throttle body (TAC) motor. The throttle body (TAC) motor system uses the following circuits: Throttle body (TAC) motor control 1 and Throttle body (TAC) motor control 2.
Two processors are also used to monitor the throttle body (TAC) motor system data. Both processors are located within the ECM. Both processors monitor each other's data to verify that the indicated throttle position is correct.
The Diagnostic Trouble Code (DTC) will set when the ECM detects an overheating or over-current condition. The condition exists for 1 s.

OBDII Code P2102 Chevrolet - Throttle Actuator Control Motor Control Circuit Low Voltage - AutoCodes.com — P2102 Chevrolet Code - Throttle Actuator Control Motor Control Circuit Low Voltage

What does this mean?

What are the Possible Causes of the DTC P2102 Chevrolet?

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

How to Fix the DTC P2102 Chevrolet?

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 Chevrolet 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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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 Chevrolet Code

What does the OBDII code P2102 mean for a Chevrolet?

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

What are common symptoms of the P2102 code?

Symptoms include reduced engine power, poor acceleration, stalling, and the check engine light being illuminated.

What causes the P2102 code on a Chevrolet vehicle?

Common causes include a faulty throttle actuator motor, damaged wiring or connectors, a malfunctioning throttle body, or issues with the Engine Control Module (ECM).

Can I drive my Chevrolet with the P2102 code?

Driving is possible but not recommended, as the vehicle may enter limp mode, reducing power and performance, which can be unsafe.

How do I diagnose the P2102 code?

Start by inspecting the throttle body, wiring, and connectors for damage or corrosion. Use a multimeter to check for voltage at the throttle actuator motor.

How do I fix the P2102 code?

Repairs typically involve replacing the throttle actuator motor, repairing damaged wiring, cleaning the throttle body, or updating/replacing the ECM.

Does the P2102 code always require part replacement?

No, sometimes cleaning the throttle body or repairing wiring can resolve the issue without replacing parts.

What tools are needed to diagnose or repair P2102?

You'll need a diagnostic scanner, multimeter, and basic hand tools to inspect and test components.

Can a dirty throttle body cause the P2102 code?

Yes, dirt or debris can restrict throttle movement and lead to low voltage in the actuator control circuit.

How much does it cost to fix the P2102 code on a Chevrolet?

Repair costs vary, ranging from $100 to $600 depending on the issue, such as cleaning the throttle body or replacing parts like the throttle actuator motor.