P2122 2014 GMC Sierra 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 2014 GMC Sierra 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.
Code P2122 2014 GMC Sierra Description
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.
What are the Possible Causes of the DTC P2122 2014 GMC Sierra?
- 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 2014 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 P2122 2014 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 P2122 2014 GMC Sierra code?
Need more information on how to fix the P2122 2014 GMC Sierra code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P2122 2014 GMC Sierra code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about P2122 2014 GMC Sierra Code
What does code P2122 mean on a 2014 GMC Sierra?
P2122 indicates that the Accelerator Pedal Position Sensor 1 circuit is experiencing low voltage.
What are the symptoms of code P2122 in a 2014 GMC Sierra?
Common symptoms include reduced engine power, difficulty accelerating, a check engine light, and potentially entering "limp mode."
What causes code P2122 in a 2014 GMC Sierra?
Possible causes include a faulty accelerator pedal position sensor, damaged wiring or connectors, or issues with the vehicle’s PCM (Powertrain Control Module).
Can I drive my 2014 GMC Sierra with code P2122?
It’s not recommended to drive for extended periods, as reduced engine power and compromised acceleration could pose safety risks.
How do I fix code P2122 on a 2014 GMC Sierra?
Repairs may involve replacing the accelerator pedal position sensor, repairing damaged wiring, or addressing issues with the PCM.
How much does it cost to fix code P2122 on a 2014 GMC Sierra?
Fixing P2122 can cost between $100 and $400 depending on whether the sensor or wiring needs replacement. PCM repairs may cost more.
Can a dirty accelerator pedal sensor cause code P2122?
No, a dirty sensor is unlikely to cause the code. P2122 is typically due to electrical issues like low voltage or sensor failure.
Is code P2122 a common issue for the 2014 GMC Sierra?
While not extremely common, P2122 can occur due to wear and tear on the accelerator pedal position sensor or related components.
Will resetting the code P2122 solve the problem on my 2014 GMC Sierra?
A code reset may temporarily clear the check engine light, but the underlying issue must be addressed to prevent the code from returning.
How do I test the accelerator pedal position sensor on a 2014 GMC Sierra?
You can test the sensor using a multimeter to check for proper voltage output or use an OBDII scanner to monitor live data readings.
Discuss the causes and fixes for P2122 2014 GMC Sierra OBDII Code
Code P2122 2014 GMC Sierra comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
