P2123 Buick 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 Buick 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 Buick 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 Buick?
- 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 Buick?
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 Buick 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 Buick Code
1. What are common symptoms of OBDII code P2123 in a Buick related to the Accelerator Pedal Position Sensor 1 Circuit High Voltage?
- Common symptoms include a sudden loss of acceleration, engine stalling, poor throttle response, and the vehicle going into limp mode.
2. What are the possible causes of OBDII code P2123 in a Buick related to the Accelerator Pedal Position Sensor 1 Circuit High Voltage?
- The code can be triggered by a faulty accelerator pedal position sensor, damaged wiring or connectors, or issues with the throttle body.
3. How can I diagnose the cause of OBDII code P2123 in my Buick related to the Accelerator Pedal Position Sensor 1 Circuit High Voltage?
- Use a diagnostic scanner to retrieve the trouble codes and perform a visual inspection of the sensor, wiring, and connectors. Test the sensor's voltage and resistance to pinpoint the issue.
4. Can I continue driving my Buick with OBDII code P2123 related to the Accelerator Pedal Position Sensor 1 Circuit High Voltage?
- It is not recommended to drive the vehicle with this code as it can lead to safety hazards and further damage. Get the issue diagnosed and repaired promptly.
5. How can I repair OBDII code P2123 in my Buick related to the Accelerator Pedal Position Sensor 1 Circuit High Voltage?
- Repair options include replacing the accelerator pedal position sensor, repairing or replacing damaged wiring, and ensuring all connectors are securely attached.
6. Are there any DIY tips for fixing OBDII code P2123 in a Buick related to the Accelerator Pedal Position Sensor 1 Circuit High Voltage?
- While some DIY enthusiasts may attempt to replace the sensor themselves, it is recommended to consult a professional mechanic for accurate diagnosis and repair.
7. Is OBDII code P2123 in a Buick related to the Accelerator Pedal Position Sensor 1 Circuit High Voltage a common issue?
- While it may not be as common as other codes, issues with the accelerator pedal position sensor can occur in Buick vehicles, especially as they age.
8. Can weather conditions affect the triggering of OBDII code P2123 related to the Accelerator Pedal Position Sensor 1 Circuit High Voltage in a Buick?
- Extreme weather conditions like excessive heat or moisture can potentially impact the sensor's performance and trigger the code.
9. Will resetting the OBDII code P2123 related to the Accelerator Pedal Position Sensor 1 Circuit High Voltage in my Buick solve the issue?
- Resetting the code may temporarily clear the warning light, but it will not fix the underlying problem. Proper diagnosis and repair are necessary.
10. How much can I expect to pay for repairing OBDII code P2123 related to the Accelerator Pedal Position Sensor 1 Circuit High Voltage in my Buick?
- The repair costs can vary depending on the exact cause of the issue, but it is advisable to budget for sensor replacement and potential wiring repairs, which can range from $100 to $300 or more.
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