P2123 2016 Chevrolet Silverado Code - Accelerator Pedal Position Sensor 1 Circuit High Voltage
Quick Answer
The P2123 diagnostic trouble code (DTC) for a 2016 Chevrolet Silverado refers to an issue with the Accelerator Pedal Position Sensor 1 Circuit High Voltage. Common causes include Faulty accelerator pedal position sensor, Damaged wiring or connectors in the sensor circuit, ECM malfunction. 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 2016 Chevrolet Silverado indicates Accelerator Pedal Position Sensor 1 Circuit High Voltage.
- Common causes
- Common causes include Faulty accelerator pedal position sensor, Damaged wiring or connectors in the sensor circuit, ECM malfunction.
- 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.
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Code P2123 2016 Chevrolet Silverado Description
The P2123 diagnostic trouble code (DTC) for a 2016 Chevrolet Silverado refers to an issue with the Accelerator Pedal Position Sensor 1 Circuit High Voltage. This code indicates that the voltage signal from the accelerator pedal position sensor has exceeded the acceptable range set by the vehicle's Engine Control Module (ECM). The accelerator pedal position sensor is a crucial component that communicates the position of the accelerator pedal to the ECM, allowing it to adjust fuel delivery and engine performance accordingly.
Common Causes of P2123 2016 Chevrolet Silverado
- Faulty accelerator pedal position sensor
- Damaged wiring or connectors in the sensor circuit
- ECM malfunction
- Corrosion or water damage in the sensor circuit
- Electrical issues in the vehicle's system
Symptoms of P2123 2016 Chevrolet Silverado
- Erratic throttle response
- Poor fuel efficiency
- Hesitation during acceleration
- Engine stalling
- Limp mode activation
How to Fix P2123 2016 Chevrolet Silverado
- Begin by conducting a thorough diagnostic scan to confirm the P2123 code and identify the exact cause of the high voltage signal.
- Inspect the accelerator pedal position sensor, wiring, and connectors for any visible damage or corrosion. Replace any faulty components as needed.
- Test the sensor circuit using a multimeter to ensure proper voltage readings. Repair or replace any damaged wiring or connectors.
- Clear the DTC from the ECM memory and perform a test drive to verify that the issue has been resolved.
- If the problem persists, further diagnosis may be required to identify any underlying issues with the ECM or other related components.
Cost to Fix P2123 2016 Chevrolet Silverado
The typical repair costs for addressing the P2123 code on a 2016 Chevrolet Silverado can vary depending on the specific cause of the issue. In general, replacing a faulty accelerator pedal position sensor can cost between $100 and $200, while addressing wiring or connector issues may range from $50 to $150. Labor costs at auto repair shops can range from $80 to $150 per hour, with additional charges for diagnostic time and any necessary parts. It is advisable to consult with a trusted mechanic or dealership to obtain a more accurate estimate based on the specific circumstances of the vehicle.
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Frequently Asked Questions about P2123 2016 Chevrolet Silverado Code
1. What does the OBDII code P2123 mean on a 2016 Chevrolet Silverado?
P2123 indicates an issue with the Accelerator Pedal Position (APP) Sensor 1 Circuit, specifically a high voltage condition detected by the powertrain control module (PCM).
2. What are the common symptoms of code P2123 in a 2016 Chevrolet Silverado?
Symptoms include reduced engine power, the "Check Engine" or "Reduced Power" warning light, unresponsive throttle, poor acceleration, or the vehicle entering "limp mode."
3. What causes the P2123 code in a 2016 Chevrolet Silverado?
Common causes include a faulty accelerator pedal position sensor, damaged wiring or connectors in the APP sensor circuit, or a malfunctioning PCM.
4. Can I drive my 2016 Chevrolet Silverado with the P2123 code?
It’s not recommended to continue driving with this code, as the reduced power mode could limit acceleration and create unsafe driving conditions.
5. How do I diagnose the P2123 code on a 2016 Chevrolet Silverado?
Diagnosis involves checking the APP sensor, inspecting the wiring and connectors for damage or corrosion, and testing the circuit for high voltage with a multimeter.
6. How do I fix the P2123 code on a 2016 Chevrolet Silverado?
Repair steps might include replacing the accelerator pedal position sensor, repairing damaged wiring or connectors, or replacing the PCM if it’s determined to be faulty.
7. Does the P2123 code always mean the accelerator pedal position sensor is bad?
No, the issue could also stem from wiring problems, connector issues, or a malfunctioning PCM, so the sensor should be properly tested before replacing it.
8. How much does it cost to fix the P2123 code on a 2016 Chevrolet Silverado?
Repair costs vary, but replacing the APP sensor typically ranges from $100 to $300, including parts and labor. Wiring or PCM repairs may cost more.
9. Can a dirty throttle body cause the P2123 code?
A dirty throttle body is typically unrelated to P2123. The code specifically points to a high voltage issue in the APP Sensor 1 Circuit.
10. Do I need to reprogram the PCM after fixing the P2123 issue?
Reprogramming is usually not required unless the PCM is replaced. After repairs, clearing the code and driving the vehicle can confirm if the issue is resolved.
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