P2138 2012 Nissan Altima Sedan Code - Accelerator Pedal Position Sensor Circuit Range/Performance
Quick Answer
The diagnostic trouble code P2138 on a 2012 Nissan Altima Sedan indicates an issue with the Accelerator Pedal Position Sensor (APP) circuit's range or performance. Common causes include Failing accelerator pedal position sensor, Corroded or damaged wiring/connectors in the sensor circuit, Malfunctioning electronic throttle control module. 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 Failing accelerator pedal position sensor, Corroded or damaged wiring/connectors in the sensor circuit, Malfunctioning electronic throttle control module.
- 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.
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Code P2138 2012 Nissan Altima Sedan Description
The diagnostic trouble code P2138 on a 2012 Nissan Altima Sedan indicates an issue with the Accelerator Pedal Position Sensor (APP) circuit's range or performance. The APP sensor is a vital component of the electronic throttle control system, responsible for sending signals to the engine control module (ECM) regarding the driver's desired throttle position. The ECM utilizes this information to adjust the throttle opening accordingly, regulating the vehicle's speed and performance.
Common Causes of P2138 2012 Nissan Altima Sedan
- Failing accelerator pedal position sensor
- Corroded or damaged wiring/connectors in the sensor circuit
- Malfunctioning electronic throttle control module
- Throttle body issues such as carbon buildup or mechanical failure
- Faulty ECM or software-related issues
Symptoms of P2138 2012 Nissan Altima Sedan
- Reduced engine power
- Unresponsive throttle or delayed acceleration
- Check Engine Light illuminated
- Rough idling or engine stalling
- Difficulty maintaining a consistent speed
How to Fix P2138 2012 Nissan Altima Sedan
- Begin by conducting a thorough diagnostic scan to confirm the presence of the P2138 trouble code and identify the exact cause of the issue.
- Inspect the accelerator pedal position sensor, wiring, and connectors for any signs of damage or corrosion. Replace any faulty components as needed.
- Check the throttle body for any obstructions or mechanical issues. Clean the throttle body if necessary or replace it if faulty.
- Test the electronic throttle control module and ECM for proper functionality. Replace any components that are not operating within specifications.
- Clear the trouble code from the ECM's memory and perform a test drive to ensure that the issue has been resolved.
Cost to Fix P2138 2012 Nissan Altima Sedan
The typical repair costs for addressing a P2138 code on a 2012 Nissan Altima Sedan can vary depending on the specific cause of the issue. In general, replacing a faulty accelerator pedal position sensor can range from $100 to $300, while cleaning or replacing the throttle body may cost between $150 and $400. Diagnostic scan fees and labor costs can add an additional $100 to $300 to the total repair bill. Overall, the total cost for resolving a P2138 code issue can range from $250 to $1000, depending on the extent of the repairs needed. It is advisable to consult with a trusted mechanic or auto repair shop to obtain a more accurate estimate based on your vehicle's specific requirements and location.
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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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