P2128 2014 Chevrolet Silverado Code - Accelerator Pedal Position Sensor 2 Circuit High Voltage
Quick Answer
The P2128 diagnostic trouble code (DTC) for a 2014 Chevrolet Silverado refers to the Accelerator Pedal Position Sensor 2 Circuit High Voltage. Common causes include Faulty accelerator pedal position sensor 2, Damaged wiring or connectors in the sensor circuit, Corrosion or poor connections in the sensor circuit. 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 Chevrolet Silverado indicates Accelerator Pedal Position Sensor 2 Circuit High Voltage.
- Common causes
- Common causes include Faulty accelerator pedal position sensor 2, Damaged wiring or connectors in the sensor circuit, Corrosion or poor connections in the sensor circuit.
- 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.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
Code P2128 2014 Chevrolet Silverado Description
The P2128 diagnostic trouble code (DTC) for a 2014 Chevrolet Silverado refers to the Accelerator Pedal Position Sensor 2 Circuit High Voltage. This code indicates that the voltage signal being received by the Engine Control Module (ECM) from the accelerator pedal position sensor 2 is higher than the specified range. The accelerator pedal position sensor is a crucial component that communicates the position of the accelerator pedal to the ECM, allowing the vehicle to adjust fuel delivery and ignition timing accordingly.
Common Causes of P2128 2014 Chevrolet Silverado
- Faulty accelerator pedal position sensor 2
- Damaged wiring or connectors in the sensor circuit
- Corrosion or poor connections in the sensor circuit
- Issues with the ECM
- Environmental factors such as moisture or debris affecting sensor operation
Symptoms of P2128 2014 Chevrolet Silverado
- Reduced engine power
- Hesitation or stalling during acceleration
- Check Engine Light illuminated
- Poor fuel efficiency
- Vehicle going into limp mode
How to Fix P2128 2014 Chevrolet Silverado
- Begin by conducting a thorough inspection of the accelerator pedal position sensor 2 and its wiring harness for any visible damage or corrosion.
- Use a multimeter to test the voltage output of the sensor and compare it to manufacturer specifications.
- If the sensor is faulty, replace it with a new, OEM-quality part.
- Check and repair any damaged wiring or connectors in the sensor circuit.
- Clear the DTC and perform a test drive to ensure the issue has been resolved.
Cost to Fix P2128 2014 Chevrolet Silverado
The typical repair costs for addressing a P2128 code on a 2014 Chevrolet Silverado can range from $150 to $400, depending on the specific cause of the issue and the cost of parts and labor. It's important to note that diagnosis time and labor rates at auto repair shops can vary, with hourly rates typically ranging from $80 to $150. Factors such as location, vehicle make and model, and engine type can also influence repair costs. For a more accurate estimate, it's recommended to consult with local auto repair shops.
Need more information about the P2128 2014 Chevrolet Silverado code?
Need more information on how to fix the P2128 2014 Chevrolet Silverado code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P2128 2014 Chevrolet Silverado code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about P2128 2014 Chevrolet Silverado Code
1. What does the P2128 code mean on a 2014 Chevrolet Silverado?
P2128 indicates a "Accelerator Pedal Position Sensor 2 Circuit High Voltage" issue, meaning the signal voltage from the accelerator pedal position sensor is higher than the expected range.
2. What are the symptoms of a P2128 code in a 2014 Chevy Silverado?
Common symptoms include reduced engine power, the check engine light turning on, unresponsive throttle, or the vehicle entering "limp mode."
3. What causes the P2128 code in a 2014 Chevrolet Silverado?
Possible causes include a faulty accelerator pedal position sensor, damaged wiring or connectors, corroded terminals, or a malfunctioning engine control module (ECM).
4. Can I drive my 2014 Chevrolet Silverado with a P2128 code?
It’s not recommended, as the vehicle may have reduced power or throttle response, which can create unsafe driving conditions.
5. How do I diagnose a P2128 code on a 2014 Chevy Silverado?
Start by inspecting the wiring and connectors around the accelerator pedal sensor for damage or corrosion. Use a multimeter to test the sensor’s voltage and compare it to manufacturer specifications.
6. How do I fix the P2128 code on my 2014 Chevrolet Silverado?
Repairs may include replacing the accelerator pedal position sensor, repairing or replacing damaged wiring, cleaning corroded connections, or, in rare cases, reprogramming or replacing the ECM.
7. How much does it cost to fix a P2128 code in a 2014 Chevrolet Silverado?
Replacing the accelerator pedal position sensor typically costs $100 to $300, including parts and labor. Wiring repairs or ECM replacement may cost more.
8. Can a dirty throttle body cause the P2128 code in my 2014 Chevy Silverado?
While a dirty throttle body can cause throttle-related issues, it is not a direct cause of the P2128 code, which specifically relates to the accelerator pedal position sensor circuit.
9. What tools are needed to troubleshoot a P2128 code on a 2014 Chevrolet Silverado?
You’ll need an OBDII scanner, multimeter, wiring diagram, and basic hand tools to inspect and test the accelerator pedal position sensor and its circuit.
10. Will clearing the P2128 code with a scanner fix the issue on a 2014 Chevrolet Silverado?
Clearing the code may turn off the check engine light temporarily, but the issue will likely return unless the underlying problem is resolved.
Discuss the causes and fixes for P2128 2014 Chevrolet Silverado OBDII Code
Code P2128 2014 Chevrolet Silverado 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.