AutoCodes – Chevrolet – P0122 2016 Chevrolet Silverado

P0122 2016 Chevrolet Silverado Code - Throttle Position Sensor 1 Circuit Low Voltage

Quick Answer

The Throttle Body Assembly contains a contact-less inductive throttle position sensing element that is managed by a customized integrated circuit. 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: P0122 2016 Chevrolet Silverado indicates Throttle Position Sensor 1 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 426

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 May 20, 2022

Description
Step-by-Step Diagnostic Guide
Possible Causes
How To Fix
Tech Notes ▶
Cost to Diagnose
FAQs
Comments
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Code P0122 2016 Chevrolet Silverado Description

The Throttle Body Assembly contains a contact-less inductive throttle position sensing element that is managed by a customized integrated circuit. The throttle position sensor is mounted within the throttle body assembly and is not serviceable. The Engine Control Module (ECM) supplies the throttle body with a 5 V reference circuit, a low reference circuit. The asynchronous signal means communication is only going from the throttle body to the ECM. The throttle body cannot receive data from the ECM over the signal/serial data circuit. The throttle position sensor provides a signal voltage that changes relative to throttle blade angle. The throttle position sensor information is transmitted between the throttle body and the ECM on the signal/serial data circuit. The ECM decodes the serial data signal and is used as voltages for throttle position sensor 1 and 2. The Diagnostic Trouble Code (DTC) will be set when the ECM detects the throttle position sensor 1 signal voltage is less than 0.32 V for greater than 1 s.

OBDII Code P0122 2016 Chevrolet Silverado - Throttle Position Sensor 1 Circuit Low Voltage - AutoCodes.com — P0122 2016 Chevrolet Silverado Code - Throttle Position Sensor 1 Circuit Low Voltage

What does this mean?

What are the Possible Causes of the DTC P0122 2016 Chevrolet Silverado?

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 P0122 2016 Chevrolet Silverado?

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 does this mean?

Code Tech Notes

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What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0122 2016 Chevrolet Silverado 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 P0122 2016 Chevrolet Silverado Code

What does OBDII code P0122 mean for a 2016 Chevrolet Silverado?

Code P0122 indicates that the throttle position sensor (TPS) 1 circuit is reporting a lower voltage than expected, signaling a possible issue with the sensor or its wiring.

What are the common symptoms of code P0122 in a 2016 Chevrolet Silverado?

Symptoms may include poor acceleration, reduced engine performance, erratic idle, stalling, and activation of the check engine light.

What causes code P0122 in a 2016 Chevrolet Silverado?

Common causes include a faulty throttle position sensor, damaged wiring, loose or corroded electrical connections, or issues with the engine control module (ECM).

Can I drive my 2016 Chevrolet Silverado with code P0122?

Driving with this code is not recommended as it can lead to reduced engine performance and safety risks, such as stalling or unintended acceleration.

How do I diagnose code P0122 on a 2016 Chevrolet Silverado?

Start by inspecting the TPS wiring and connectors for damage or corrosion. Use a multimeter to test the voltage output of the sensor, and check for proper operation of the ECM.

How do I fix code P0122 on a 2016 Chevrolet Silverado?

Repairs may involve replacing the throttle position sensor, repairing or replacing damaged wiring, cleaning electrical connections, or reprogramming the ECM if necessary.

How much does it cost to fix code P0122 on a 2016 Chevrolet Silverado?

Repair costs can range from $100 to $400, depending on whether the throttle position sensor or wiring needs replacement and labor costs.

Can a dirty throttle body cause code P0122 on a 2016 Chevrolet Silverado?

Yes, a dirty throttle body can impact sensor readings, leading to low voltage issues and triggering code P0122. Cleaning the throttle body may help resolve the problem.

Will resetting the check engine light fix code P0122 on a 2016 Chevrolet Silverado?

Resetting the light may temporarily clear the code, but the underlying issue must be resolved to prevent the code from returning.

How can I prevent code P0122 from occurring again on my 2016 Chevrolet Silverado?

Regular maintenance, including inspecting and cleaning the throttle body and wiring connections, can help prevent issues with the throttle position sensor circuit.