AutoCodes – Chevrolet – P2122 2016 Chevrolet Silverado

P2122 2016 Chevrolet Silverado Code - Accelerator Pedal Position Sensor 1 Circuit Low Voltage

Quick Answer

The Accelerator Pedal Assembly contains 2 Accelerator Pedal Position (APP) sensors. Common causes include Faulty Accelerator Pedal Position Sensor, Accelerator Pedal Position Sensor harness is open or shorted, Accelerator Pedal Position Sensor 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: P2122 2016 Chevrolet Silverado indicates Accelerator Pedal Position Sensor 1 Circuit Low Voltage.
Common causes: Common causes include Faulty Accelerator Pedal Position Sensor, Accelerator Pedal Position Sensor harness is open or shorted, Accelerator Pedal Position Sensor 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 908

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 Sep 08, 2022

Description
Possible Causes
How To Fix
Tech Notes ▶
Cost to Diagnose
FAQs
Comments
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Code P2122 2016 Chevrolet Silverado Description

The Accelerator Pedal Assembly contains 2 Accelerator Pedal Position (APP) sensors. The APP sensors are mounted to the accelerator pedal assembly and are not serviceable. The APP sensors provide a signal voltage that changes relative to the pedal position. The Engine Control Module (ECM) supplies each APP sensor with a 5 V reference circuit, a low reference circuit, and a signal circuit.
Both the APP sensors 1 and 2 signal percentages increase as the pedal is depressed, from approximately 0 percent at rest to above 95 percent when fully depressed.
The Diagnostic Trouble Code (DTC) will be set when the ECM detects that the APP sensor 1 voltage is less than 0.46 V for less than 1 s.

OBDII Code P2122 2016 Chevrolet Silverado - Accelerator Pedal Position Sensor 1 Circuit Low Voltage - AutoCodes.com — P2122 2016 Chevrolet Silverado Code - Accelerator Pedal Position Sensor 1 Circuit Low Voltage

What does this mean?

What are the Possible Causes of the DTC P2122 2016 Chevrolet Silverado?

Faulty Accelerator Pedal Position Sensor
Accelerator Pedal Position Sensor harness is open or shorted
Accelerator Pedal Position Sensor circuit poor electrical connection
Faulty Engine Control Module (ECM)

How to Fix the DTC P2122 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 P2122 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.

Need more information about the P2122 2016 Chevrolet Silverado code?

Need more information on how to fix the P2122 2016 Chevrolet Silverado code? Get Access to Factory Service Manuals

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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 P2122 2016 Chevrolet Silverado Code

What are the common symptoms of OBDII code P2122 in a 2016 Chevrolet Silverado?

Common symptoms include reduced engine power, hesitation or stalling when accelerating, and the illumination of the Check Engine Light.

What does the OBDII code P2122 on a 2016 Chevrolet Silverado indicate?

P2122 indicates a low voltage condition in the Accelerator Pedal Position Sensor 1 circuit of the vehicle.

What are some possible causes of OBDII code P2122 on a 2016 Chevrolet Silverado?

Possible causes include a faulty accelerator pedal position sensor, damaged wiring or connectors in the sensor circuit, or issues with the engine control module.

How can I diagnose the OBDII code P2122 on my 2016 Chevrolet Silverado?

Diagnosis typically involves using a scan tool to read the code, testing the accelerator pedal position sensor for proper voltage output, and inspecting the sensor's wiring for any damage.

Is it safe to drive my 2016 Chevrolet Silverado with OBDII code P2122 active?

It is not recommended to drive the vehicle with this code active, as it can lead to potential safety hazards due to reduced engine power and erratic acceleration.

Can I repair OBDII code P2122 on my 2016 Chevrolet Silverado myself?

Depending on your mechanical skills, you may be able to replace the accelerator pedal position sensor or repair any damaged wiring yourself. However, professional diagnosis and repair are recommended for accurate and lasting solutions.

How much does it typically cost to repair OBDII code P2122 on a 2016 Chevrolet Silverado?

The cost of repairs can vary depending on the exact cause of the issue. Replacing the accelerator pedal position sensor can range from $100 to $300, while addressing wiring or module issues may cost more.

Will resetting the OBDII code P2122 on my 2016 Chevrolet Silverado make it go away permanently?

Resetting the code may temporarily turn off the Check Engine Light, but if the underlying issue causing P2122 is not addressed, the code is likely to reappear during driving.