P2138 2005 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 2005 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 2005 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 2005 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 2005 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 2005 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 P2138 2005 Nissan Altima Sedan Code
1. What are the common symptoms of OBDII code P2138 in a 2005 Nissan Altima Sedan?
- Common symptoms include reduced engine power, hesitation during acceleration, and the vehicle going into "limp mode" where it may not exceed a certain speed.
2. What causes the OBDII code P2138 in a 2005 Nissan Altima Sedan?
- The code is typically triggered by issues with the accelerator pedal position sensor or its circuit, such as sensor malfunction, wiring problems, or a faulty throttle body.
3. How can I diagnose the OBDII code P2138 in my 2005 Nissan Altima Sedan?
- Diagnosing the issue involves checking the accelerator pedal position sensor's voltage readings, inspecting the wiring for damage, and testing the throttle body for proper functionality.
4. Can I continue driving my 2005 Nissan Altima Sedan with OBDII code P2138?
- It is not recommended to continue driving with this code present, as it can lead to further damage and safety risks. It's best to address the issue promptly.
5. How can I repair OBDII code P2138 in my 2005 Nissan Altima Sedan?
- Repair options may include replacing the accelerator pedal position sensor, repairing or replacing damaged wiring, or cleaning/replacing the throttle body, depending on the root cause of the issue.
6. Will resetting the OBDII code P2138 in my 2005 Nissan Altima Sedan make it go away permanently?
- Resetting the code may temporarily clear the warning light, but if the underlying issue causing the code is not addressed, it is likely to return. Proper diagnosis and repair are recommended.
7. Is the OBDII code P2138 in a 2005 Nissan Altima Sedan a common issue?
- While it may not be extremely common, issues with the accelerator pedal position sensor and related circuits can occur in vehicles, including the 2005 Nissan Altima Sedan.
8. Can a DIY enthusiast fix the OBDII code P2138 in a 2005 Nissan Altima Sedan?
- Depending on their skill level and access to tools, a DIY enthusiast may be able to diagnose and repair the issue themselves, especially if it involves basic tasks like sensor replacement or wiring repairs.
9. How much does it typically cost to repair OBDII code P2138 in a 2005 Nissan Altima Sedan?
- The cost of repairs can vary based on the specific cause of the issue, but it may range from $200 to $500 or more, including parts and labor.
10. Will OBDII code P2138 cause my 2005 Nissan Altima Sedan to fail an emissions test?
- Yes, the presence of this code may cause your vehicle to fail an emissions test, as it indicates a problem with the accelerator pedal position sensor circuit, which can affect emissions control systems.
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