P2128 2014 GMC Sierra Code - Accelerator Pedal Position Sensor 2 Circuit High 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
- P2128 2014 GMC Sierra indicates Accelerator Pedal Position Sensor 2 Circuit High 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 P2128 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 2 voltage is greater than 2.6 V for less than 1 s.
What are the Possible Causes of the DTC P2128 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 P2128 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 P2128 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 P2128 2014 GMC Sierra code?
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Frequently Asked Questions about P2128 2014 GMC Sierra Code
1. What are the common symptoms of OBDII code P2128 in a 2014 GMC Sierra?
- Common symptoms include reduced engine power, a check engine light illuminated on the dashboard, and potential issues with the acceleration response.
2. What does the OBDII code P2128 indicating "Accelerator Pedal Position Sensor 2 Circuit High Voltage" mean for a 2014 GMC Sierra?
- This code suggests that there is a high voltage condition detected in the circuit related to the accelerator pedal position sensor 2 in the vehicle.
3. What are some possible causes of OBDII code P2128 in a 2014 GMC Sierra?
- Potential causes include a faulty accelerator pedal position sensor, damaged wiring or connectors in the sensor circuit, or a problem with the engine control module.
4. How serious is OBDII code P2128 in a 2014 GMC Sierra?
- While the vehicle may still be operable with this code present, it is important to address it promptly to prevent potential safety hazards and further damage to the engine.
5. Can I continue driving my 2014 GMC Sierra with OBDII code P2128 present?
- It is not recommended to drive the vehicle with this code active, as it could lead to reduced performance and safety risks. It's best to have the issue diagnosed and repaired as soon as possible.
6. How can I diagnose and repair OBDII code P2128 in my 2014 GMC Sierra?
- Diagnosis typically involves using a scan tool to read the code, testing the accelerator pedal position sensor, inspecting wiring and connectors, and potentially replacing the sensor or addressing any wiring issues.
7. Is it possible to reset OBDII code P2128 in a 2014 GMC Sierra without fixing the underlying issue?
- While you can clear the code with a scan tool, it is not recommended to do so without addressing the root cause, as the issue may persist and lead to further problems down the line.
8. Can a DIY enthusiast fix OBDII code P2128 in a 2014 GMC Sierra?
- Depending on your skill level and access to tools, you may be able to address this issue yourself by replacing the accelerator pedal position sensor or fixing wiring problems. However, professional diagnosis and repair are recommended for accurate and long-lasting solutions.
9. How much does it typically cost to repair OBDII code P2128 in a 2014 GMC Sierra?
- The cost of repairs can vary based on the specific cause of the code and labor rates in your area. It's advisable to consult a mechanic for a diagnosis and estimate before proceeding with any repairs.
10. Are there any preventative measures to avoid OBDII code P2128 in a 2014 GMC Sierra?
- Regular vehicle maintenance, such as checking wiring integrity and sensor function during scheduled services, can help prevent issues like high voltage conditions in the accelerator pedal position sensor circuit.
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