AutoCodes – GMC – P2119 2018 GMC Sierra

P2119 2018 GMC Sierra Code - Throttle Closed Position Performance

Quick Answer

The Engine Control Module (ECM) determines the driver's intent based on input from the accelerator pedal position sensors, then calculates the appropriate throttle response based on the throttle position sensors. Common causes include Binding or bent Throttle Plate, Faulty Throttle Body Assembly, Throttle Body Assembly harness is open or shorted. 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
P2119 2018 GMC Sierra indicates Throttle Closed Position Performance.
Common causes
Common causes include Binding or bent Throttle Plate, Faulty Throttle Body Assembly, Throttle Body Assembly harness is open or shorted.
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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 285
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Aug 13, 2022
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Code P2119 2018 GMC Sierra Description

The Engine Control Module (ECM) determines the driver's intent based on input from the accelerator pedal position sensors, then calculates the appropriate throttle response based on the throttle position sensors. The ECM controls the throttle valve by applying a varying voltage to the control circuits of the Throttle Actuator Control (TAC) motor. The ECM monitors the duty cycle that is required to actuate the throttle valve. The ECM monitors the TP sensor signal/serial data circuit to determine the actual throttle valve position. The TP sensor information is transmitted between the throttle body and the ECM on the signal/serial data circuit. The Diagnostic Trouble Code (DTC) will be set when the ECM determines that the throttle blade did not return to the rest position within 1 s.
OBDII Code P2119 2018 GMC Sierra - Throttle Closed Position Performance - AutoCodes.com
P2119 2018 GMC Sierra Code - Throttle Closed Position Performance

What are the Possible Causes of the DTC P2119 2018 GMC Sierra?

  • Binding or bent Throttle Plate
  • Faulty Throttle Body Assembly
  • Throttle Body Assembly harness is open or shorted
  • Throttle Body Assembly circuit poor electrical connection
  • Faulty Engine Control Module (ECM)

How to Fix the DTC P2119 2018 GMC Sierra?

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 P2119 2018 GMC Sierra 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 P2119 2018 GMC Sierra code?

Need more information on how to fix the P2119 2018 GMC Sierra 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 P2119 2018 GMC Sierra Code

What does the OBDII code P2119 mean for a 2018 GMC Sierra?

P2119 indicates a "Throttle Closed Position Performance" issue, which means the throttle body is not operating as expected when it is supposed to be in the closed position.

What are the common symptoms of code P2119 in a 2018 GMC Sierra?

Symptoms may include reduced engine power, poor acceleration, the "Check Engine" light turning on, erratic idling, or the vehicle entering "limp mode."

What causes the P2119 code in a 2018 GMC Sierra?

Possible causes include a faulty throttle body, a malfunctioning throttle position sensor, wiring issues, carbon buildup in the throttle body, or a problem with the engine control module (ECM).

Can I drive my 2018 GMC Sierra with the P2119 code?

Driving with the P2119 code is not recommended, as it can lead to reduced engine performance or sudden loss of power, which could be unsafe.

How do I fix the P2119 code on my 2018 GMC Sierra?

Common fixes include cleaning the throttle body, repairing or replacing damaged wiring, replacing the throttle body or throttle position sensor, or reprogramming the ECM if necessary.

How do I diagnose the P2119 code on a 2018 GMC Sierra?

Diagnosis involves checking the throttle body for carbon buildup, testing the throttle position sensor, inspecting wiring and connectors for damage, and using a scan tool to monitor throttle position data.

Will cleaning the throttle body fix the P2119 code?

In many cases, cleaning the throttle body to remove carbon buildup can resolve the issue, but this depends on the severity of the problem and whether other components are faulty.

Is the P2119 code covered under warranty for a 2018 GMC Sierra?

It depends on the terms of your vehicle's warranty. If the throttle body or related components are still under warranty, the repair may be covered.

How much does it cost to fix the P2119 code on a 2018 GMC Sierra?

Repair costs can vary but typically range from $150 to $700, depending on whether you need a throttle body cleaning, part replacement, or ECM reprogramming.

What tools are needed to troubleshoot the P2119 code on a 2018 GMC Sierra?

You may need an OBDII scanner, a multimeter to check electrical connections, basic hand tools, and throttle body cleaner for maintenance tasks.

Discuss the causes and fixes for P2119 2018 GMC Sierra OBDII Code

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