P2122 2018 Chevrolet Silverado Code - Accelerator Pedal Position Sensor 1 Circuit Low 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
- P2122 2018 Chevrolet Silverado indicates Accelerator Pedal Position Sensor 1 Circuit Low 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 P2122 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 1 voltage is less than 0.46 V for less than 1 s.
What are the Possible Causes of the DTC P2122 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 P2122 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 P2122 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 P2122 2018 Chevrolet Silverado Code
1. What does the OBDII code P2122 mean for a 2018 Chevrolet Silverado?
P2122 indicates a low voltage issue in the Accelerator Pedal Position Sensor 1 Circuit, which monitors the position of the accelerator pedal.
2. What are the common symptoms of code P2122 in a 2018 Chevrolet Silverado?
Symptoms may include reduced engine power, poor throttle response, the check engine light turning on, or the vehicle entering "limp mode."
3. What causes the P2122 code to appear on a 2018 Chevrolet Silverado?
Common causes include a faulty accelerator pedal position sensor, damaged wiring or connectors, or a malfunction in the engine control module (ECM).
4. Can I drive my 2018 Chevrolet Silverado with the P2122 code?
It is not recommended to drive with the P2122 code, as reduced engine power and throttle issues can make the vehicle unsafe to operate.
5. How do I diagnose the P2122 code on a 2018 Chevrolet Silverado?
Start by inspecting the accelerator pedal position sensor, checking for damaged wiring or loose connections, and using a diagnostic scan tool to monitor sensor voltage.
6. How can I fix the P2122 code on my 2018 Chevrolet Silverado?
Repairs may include replacing the accelerator pedal position sensor, repairing damaged wiring, or updating/reprogramming the ECM if necessary.
7. How much does it cost to repair the P2122 code on a 2018 Chevrolet Silverado?
The cost can vary, but replacing the accelerator pedal position sensor typically ranges from $100 to $300, depending on parts and labor.
8. Can a failing battery cause the P2122 code in a 2018 Chevrolet Silverado?
Yes, a weak or failing battery can cause voltage-related issues that may trigger the P2122 code.
9. Do I need to replace the entire accelerator pedal assembly to fix the P2122 code?
Not always. In some cases, the sensor can be replaced separately, but on some models, the entire pedal assembly may need replacement.
10. How can I prevent the P2122 code from recurring on my 2018 Chevrolet Silverado?
Regularly inspect and maintain the wiring and connectors around the accelerator pedal sensor, and ensure the ECM is functioning properly.
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