P2123 2014 Chevrolet Silverado 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 Chevrolet Silverado 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 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 greater than 4.75 V for less than 1 s.
What are the Possible Causes of the DTC P2123 2014 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 P2123 2014 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 P2123 2014 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 P2123 2014 Chevrolet Silverado Code
1. What does OBDII code P2123 mean on a 2014 Chevrolet Silverado?
Code P2123 indicates a high voltage issue in the Accelerator Pedal Position (APP) Sensor 1 Circuit, which monitors the position of the accelerator pedal for the engine control module (ECM).
2. What are the common symptoms of code P2123 in a 2014 Chevrolet Silverado?
Symptoms may include reduced engine performance, the vehicle entering "limp mode," unresponsive acceleration, and the illumination of the check engine light.
3. What causes code P2123 in a Chevrolet Silverado?
Common causes include a faulty APP sensor, damaged wiring or connectors in the APP sensor circuit, a failing ECM, or electrical issues like short circuits or corrosion.
4. How do I diagnose code P2123 on my 2014 Silverado?
Start by checking the APP sensor and its wiring for damage or loose connections. Use a multimeter to measure voltage at the sensor and compare it to manufacturer specifications. Scan for additional trouble codes that might indicate related issues.
5. Can I drive with code P2123 on my Silverado?
It is not recommended to drive with code P2123, as the vehicle may enter limp mode, causing limited performance, and unresolved issues could lead to further damage.
6. How do I fix code P2123 in a 2014 Chevrolet Silverado?
Repairs may include replacing the APP sensor, repairing or replacing damaged wiring or connectors, or reprogramming or replacing the ECM if necessary.
7. How much does it cost to fix code P2123 in a Chevrolet Silverado?
Repair costs depend on the issue, but replacing the APP sensor typically ranges from $100 to $300, including parts and labor. Wiring or ECM repairs may cost more.
8. Can a dirty throttle body cause code P2123?
While a dirty throttle body is not a direct cause of P2123, it can contribute to similar symptoms. Cleaning it may help if the APP sensor and wiring are functioning correctly.
9. How do I reset the check engine light after fixing code P2123?
Use an OBDII scanner to clear the code after addressing the issue. If the problem persists, the code may return, indicating further diagnosis is needed.
10. What happens if I ignore code P2123?
Ignoring the code can lead to continued performance issues, potential safety concerns due to inconsistent throttle response, and possible damage to related components over time.
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