P2123 2014 GMC Sierra Code - Accelerator Pedal Position Sensor 1 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
- P2123 2014 GMC Sierra indicates Accelerator Pedal Position Sensor 1 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 P2123 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 greater than 4.75 V for less than 1 s.
What are the Possible Causes of the DTC P2123 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 P2123 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 P2123 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.
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Frequently Asked Questions about P2123 2014 GMC Sierra Code
1. What are the common symptoms of OBDII code P2123 in a 2014 GMC Sierra?
The common symptoms of OBDII code P2123 in a 2014 GMC Sierra include issues with acceleration, decreased engine performance, and the illumination of the Check Engine Light.
2. What does the OBDII code P2123 "Accelerator Pedal Position Sensor 1 Circuit High Voltage" mean for a 2014 GMC Sierra?
The code P2123 indicates that there is a high voltage condition detected in the circuit for the accelerator pedal position sensor 1 in a 2014 GMC Sierra.
3. What are the possible causes of OBDII code P2123 in a 2014 GMC Sierra?
Possible causes of OBDII code P2123 in a 2014 GMC Sierra include a faulty accelerator pedal position sensor, wiring issues, connector problems, or a problem with the engine control module (ECM).
4. How can I diagnose the OBDII code P2123 in my 2014 GMC Sierra?
Diagnosing OBDII code P2123 in a 2014 GMC Sierra involves using a diagnostic scanner to retrieve the code, checking the wiring and connectors for any visible damage, and testing the accelerator pedal position sensor for proper functionality.
5. Is it safe to drive my 2014 GMC Sierra with OBDII code P2123 active?
It is not recommended to drive your 2014 GMC Sierra with OBDII code P2123 active, as it can lead to poor engine performance and potential safety hazards due to issues with acceleration.
6. Can I repair OBDII code P2123 in my 2014 GMC Sierra myself?
Depending on your level of automotive expertise, you may be able to repair OBDII code P2123 in your 2014 GMC Sierra by replacing the faulty accelerator pedal position sensor or addressing any wiring/connection issues. If unsure, it's best to consult a professional mechanic.
7. How much does it typically cost to repair OBDII code P2123 in a 2014 GMC Sierra?
The cost to repair OBDII code P2123 in a 2014 GMC Sierra can vary depending on the specific cause of the issue. Expenses may include parts such as a new accelerator pedal position sensor and labor costs if you opt for professional repair services.
8. Can OBDII code P2123 in a 2014 GMC Sierra cause other problems if left untreated?
If left untreated, OBDII code P2123 in a 2014 GMC Sierra can potentially lead to further damage to the engine or other related components due to improper sensor readings affecting engine performance.
9. How long does it typically take to repair OBDII code P2123 in a 2014 GMC Sierra?
The repair time for OBDII code P2123 in a 2014 GMC Sierra can vary depending on the exact cause of the issue and the complexity of the repair process. It may take a few hours to a day for the repair to be completed.
10. Are there any preventive measures to avoid OBDII code P2123 in a 2014 GMC Sierra?
To help prevent OBDII code P2123 in a 2014 GMC Sierra, it's essential to perform regular vehicle maintenance, including checking and replacing faulty sensors or wiring as needed, and addressing any engine performance issues promptly.
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