P2128 2018 Chevrolet Silverado 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 2018 Chevrolet Silverado 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 2018 Chevrolet Silverado 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 2018 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 P2128 2018 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 is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P2128 2018 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.
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Frequently Asked Questions about P2128 2018 Chevrolet Silverado Code
1. What are the common symptoms of OBDII code P2128 in a 2018 Chevrolet Silverado?
- Common symptoms include reduced engine power, hesitation or stalling when accelerating, and the illumination of the Check Engine Light.
2. What does the OBDII code P2128 on a 2018 Chevrolet Silverado indicate?
- This code specifically points to an issue with the Accelerator Pedal Position Sensor 2 Circuit registering high voltage.
3. What are the possible causes of OBDII code P2128 in a 2018 Chevrolet Silverado?
- The common causes include a faulty accelerator pedal position sensor, wiring issues in the sensor circuit, or a problem with the engine control module.
4. How serious is OBDII code P2128 in a 2018 Chevrolet Silverado?
- While the vehicle may still be operable with this code, it is important to address it promptly to prevent potential safety hazards and further damage to the vehicle.
5. Can I continue driving my 2018 Chevrolet Silverado with the P2128 code?
- It is not recommended to drive the vehicle extensively with this code as it can lead to performance issues and potential safety concerns on the road.
6. How can I diagnose and repair OBDII code P2128 in a 2018 Chevrolet Silverado?
- Diagnosis typically involves checking the accelerator pedal position sensor, inspecting related wiring, and testing the sensor's voltage output. Repair may involve sensor replacement or addressing wiring issues.
7. Is it possible to reset OBDII code P2128 in a 2018 Chevrolet Silverado without fixing the underlying issue?
- While clearing the code may temporarily turn off the Check Engine Light, it is crucial to address the root cause to prevent the code from reoccurring and to ensure proper vehicle operation.
8. Are there any DIY tips for fixing OBDII code P2128 in a 2018 Chevrolet Silverado?
- DIY enthusiasts may attempt to inspect the sensor connections, clean any corrosion, and visually check the wiring harness for damage. However, for accurate diagnosis and repair, professional help is recommended.
9. How much does it typically cost to repair OBDII code P2128 in a 2018 Chevrolet Silverado?
- The cost of repair can vary depending on the exact cause of the code, but it may range from $100 to $300 or more, including parts and labor.
10. Can a mechanic easily resolve OBDII code P2128 in a 2018 Chevrolet Silverado?
- A qualified mechanic with experience in diagnosing and repairing such issues should be able to effectively resolve the P2128 code by following proper diagnostic procedures and making the necessary repairs.
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