P2138 2012 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
- P2138 2012 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 P2138 2012 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 P2138 2012 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
- Faulty Electric Throttle Control Actuator
How to Fix the DTC P2138 2012 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 P2138 2012 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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Need Help with the Code?
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Frequently Asked Questions about P2138 2012 Nissan Altima Sedan Code
1. What are the common symptoms of OBDII code P2138 in a 2012 Nissan Altima Sedan?
The common symptoms of code P2138 in a 2012 Nissan Altima Sedan include reduced engine power, hesitation or jerking during acceleration, and the vehicle going into "limp mode."
2. What are the possible causes of OBDII code P2138 in a 2012 Nissan Altima Sedan?
Possible causes of code P2138 in a 2012 Nissan Altima Sedan include a faulty accelerator pedal position sensor, issues with the wiring or connectors related to the sensor, or problems with the electronic throttle control system.
3. How serious is OBDII code P2138 in a 2012 Nissan Altima Sedan?
Code P2138 should be taken seriously as it can affect the drivability of the vehicle and potentially lead to safety issues. It is recommended to address this code promptly to avoid further complications.
4. Can I continue driving my 2012 Nissan Altima Sedan with OBDII code P2138?
It is not recommended to continue driving your 2012 Nissan Altima Sedan with code P2138, as it can cause performance issues and potentially worsen over time. It is best to have the issue diagnosed and repaired as soon as possible.
5. How can I diagnose and repair OBDII code P2138 in my 2012 Nissan Altima Sedan?
Diagnosing code P2138 typically involves using a scan tool to check for the code and then inspecting the accelerator pedal position sensor and its related components. Repair may involve replacing the sensor, repairing wiring issues, or addressing problems with the throttle control system.
6. Will resetting the OBDII code P2138 in my 2012 Nissan Altima Sedan make it go away permanently?
Resetting the code may temporarily turn off the check engine light, but if the underlying issue causing code P2138 is not addressed, the code is likely to reappear. It is important to diagnose and fix the root cause of the problem.
7. How much does it cost to repair OBDII code P2138 in a 2012 Nissan Altima Sedan?
The cost of repairing code P2138 in a 2012 Nissan Altima Sedan can vary depending on the specific cause of the issue, labor rates in your area, and whether you choose to go to a dealership or an independent mechanic. Costs may involve parts replacement and diagnostic labor.
8. Can a DIY enthusiast fix OBDII code P2138 in a 2012 Nissan Altima Sedan?
Depending on your skill level and access to tools, a DIY enthusiast may be able to address code P2138 by replacing the accelerator pedal position sensor or addressing wiring issues. However, it is recommended to have a professional diagnosis if you are unsure.
9. How long does it take to repair OBDII code P2138 in a 2012 Nissan Altima Sedan?
The repair time for code P2138 in a 2012 Nissan Altima Sedan can vary depending on the specific cause of the issue and the mechanic's workload. In general, it may take a few hours to a full day to diagnose and repair the problem.
10. Can extreme weather conditions affect the occurrence of OBDII code P2138 in a 2012 Nissan Altima Sedan?
Extreme weather conditions, such as extreme heat or cold, can potentially affect the performance of sensors and electrical components in the vehicle, including the accelerator pedal position sensor. It is important to keep the vehicle well-maintained to prevent issues related to weather.
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