AutoCodes – Chevrolet – P2103 Chevrolet

P2103 Chevrolet Code - Throttle Actuator Control Motor Control Circuit High 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: P2103 Chevrolet indicates Throttle Actuator Control Motor Control Circuit High 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 727

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 P2103 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 a throttle actuator circuit that is shorted. The condition exists for 1 s.

OBDII Code P2103 Chevrolet - Throttle Actuator Control Motor Control Circuit High Voltage - AutoCodes.com — P2103 Chevrolet Code - Throttle Actuator Control Motor Control Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P2103 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 P2103 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 P2103 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 P2103 Chevrolet Code

1. What does the OBDII code P2103 mean on a Chevrolet?

P2103 indicates a high voltage issue in the Throttle Actuator Control (TAC) Motor Control Circuit, which regulates the throttle plate's movement based on input from the accelerator pedal.

2. What are the common symptoms of code P2103 in a Chevrolet?

Symptoms may include reduced engine power, an illuminated check engine light, poor acceleration, and the vehicle entering "limp mode."

3. What causes the P2103 code in Chevrolet vehicles?

Common causes include a faulty throttle actuator motor, damaged wiring or connectors in the TAC circuit, a malfunctioning throttle body, or a failing powertrain control module (PCM).

4. Can I still drive my Chevrolet with the P2103 code?

Driving with P2103 is not recommended, as the vehicle may experience limited power and poor drivability. Immediate diagnosis and repair are advised.

5. How is the P2103 code diagnosed on a Chevrolet?

A technician will use a scan tool to confirm the code, visually inspect the wiring and connectors, test the throttle actuator motor, and check for proper voltage and ground in the TAC circuit.

6. How can I fix the P2103 code on my Chevrolet?

Repairs may include replacing the throttle actuator motor, repairing damaged wiring or connectors, cleaning or replacing the throttle body, or updating/replacing the PCM.

7. Can a dirty throttle body cause the P2103 code?

While a dirty throttle body is not the primary cause of P2103, it can contribute to throttle actuator issues. Cleaning the throttle body may help if buildup is present.

8. Does the P2103 code require throttle body replacement?

Throttle body replacement is only needed if the throttle actuator motor or internal components are confirmed to be faulty after testing.

9. What tools are needed to troubleshoot the P2103 code?

Tools may include an OBDII scanner, multimeter, wiring diagrams, and possibly a throttle body cleaner if buildup is suspected.

10. How much does it cost to fix the P2103 code on a Chevrolet?

Repair costs can vary widely depending on the root cause. Replacing a throttle body may cost $300â€“$600, while wiring repairs or PCM replacements may have different costs.