P2123 2009 Nissan Altima Sedan Code - Accelerator Pedal Position Sensor Circuit Range/Performance
Quick Answer
The Accelerator Pedal Position (APP) sensor is installed on the upper end of the accelerator pedal assembly. 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 2009 Nissan Altima Sedan indicates Accelerator Pedal Position Sensor Circuit Range/Performance.
- 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 2009 Nissan Altima Sedan Description
Accelerator pedal position sensor has two sensors. These sensors are a kind of potentiometers which transform the accelerator pedal position into output voltage, and emit the voltage signal to the ECM.
In addition, these sensors detect the opening and closing speed of the accelerator pedal and feed the voltage signals to the ECM. The ECM judges the current opening angle of the accelerator pedal from these signals and controls the throttle control motor based on these signals.
Idle position of the accelerator pedal is determined by the ECM receiving the signal from the accelerator pedal position sensor. The ECM uses this signal for the engine operation
such as fuel cut.
What are the Possible Causes of the DTC P2123 2009 Nissan Altima Sedan?
- Faulty Accelerator Pedal Position Sensor
- Accelerator Pedal Position Sensor harness is open or shorted
- Accelerator Pedal Position Sensor circuit poor electrical connection
How to Fix the DTC P2123 2009 Nissan Altima Sedan?
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 2009 Nissan Altima Sedan 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 2009 Nissan Altima Sedan Code
1. What does the OBDII code P2123 for a 2009 Nissan Altima Sedan mean?
The code P2123 indicates an issue with the Accelerator Pedal Position Sensor Circuit Range/Performance in the vehicle.
2. What are common symptoms of the P2123 code in a 2009 Nissan Altima Sedan?
Common symptoms of the P2123 code may include reduced engine power, hesitation or stalling when accelerating, and the vehicle going into "limp mode."
3. What are the possible causes of the P2123 code in a 2009 Nissan Altima Sedan?
Possible causes of the P2123 code include a faulty accelerator pedal position sensor, damaged wiring or connectors in the sensor circuit, or issues with the electronic control module (ECM).
4. How can I diagnose the P2123 code in my 2009 Nissan Altima Sedan?
Diagnosing the P2123 code typically involves using an OBDII scanner to retrieve the code, checking the condition of the accelerator pedal position sensor, inspecting the sensor circuit for any damage, and testing the ECM for proper functionality.
5. Can I still drive my 2009 Nissan Altima Sedan with the P2123 code present?
It is not recommended to drive the vehicle with the P2123 code present, as it can lead to unsafe driving conditions and potential further damage to the engine or other components.
6. How can I repair the P2123 code in my 2009 Nissan Altima Sedan?
Repairing the P2123 code may involve replacing the accelerator pedal position sensor, repairing any damaged wiring or connectors in the circuit, or reprogramming the ECM if necessary.
7. Is it possible for the P2123 code to be triggered by a loose gas cap on a 2009 Nissan Altima Sedan?
No, the P2123 code specifically relates to issues with the accelerator pedal position sensor circuit and is not related to a loose gas cap.
8. Can a DIY enthusiast fix the P2123 code in a 2009 Nissan Altima Sedan?
While some DIY enthusiasts may be able to diagnose and repair the P2123 code, it is recommended to seek professional help, especially when dealing with electronic components and sensor circuits.
9. How much does it cost to repair the P2123 code in a 2009 Nissan Altima Sedan?
The cost of repairing the P2123 code can vary depending on the specific issue causing the code, the labor rates in your area, and whether you choose to repair it yourself or take it to a mechanic.
10. Will resetting the OBDII code clear the P2123 code in a 2009 Nissan Altima Sedan?
Resetting the OBDII code may temporarily clear the code, but if the underlying issue causing the P2123 code is not addressed, the code is likely to reappear.
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