P2138 2003 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 2003 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 2003 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 2003 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 2003 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 2003 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 2003 Nissan Altima Sedan Code
1. What does OBDII code P2138 mean for a 2003 Nissan Altima Sedan?
The code P2138 indicates an issue with the Accelerator Pedal Position Sensor Circuit Range/Performance in the vehicle.
2. What are some common symptoms of OBDII code P2138 in a 2003 Nissan Altima Sedan?
Common symptoms of code P2138 may include reduced engine power, hesitation during acceleration, and the vehicle going into a limp mode.
3. What are the possible causes of OBDII code P2138 in a 2003 Nissan Altima Sedan?
Potential causes of code P2138 can include a faulty accelerator pedal position sensor, issues with the throttle body, wiring or connector problems, or a malfunctioning Engine Control Module (ECM).
4. How can I diagnose OBDII code P2138 in my 2003 Nissan Altima Sedan?
Diagnosing code P2138 may involve using a scan tool to check for the specific error code, testing the accelerator pedal position sensor and related components for proper operation, and inspecting the wiring and connectors for any damage or loose connections.
5. Can I still drive my 2003 Nissan Altima Sedan with OBDII code P2138?
It is not recommended to continue driving your vehicle with code P2138 as it can lead to further damage and safety concerns. It's best to have the issue diagnosed and repaired as soon as possible.
6. How can I repair OBDII code P2138 in my 2003 Nissan Altima Sedan?
Repairing code P2138 may involve replacing the faulty accelerator pedal position sensor, repairing any wiring or connector issues, cleaning the throttle body, or reprogramming the ECM if needed.
7. Will resetting the OBDII code P2138 in my 2003 Nissan Altima Sedan make it go away permanently?
Simply resetting the code may temporarily clear the Check Engine Light, but if the underlying issue causing code P2138 is not addressed, the code is likely to return.
8. How much does it typically cost to fix OBDII code P2138 in a 2003 Nissan Altima Sedan?
The cost of repairing code P2138 can vary depending on the specific cause of the issue, but it may range from $100 to $500 or more, including parts and labor.
9. Can a DIY enthusiast fix OBDII code P2138 in a 2003 Nissan Altima Sedan?
Depending on your skill level and experience with automotive repairs, some DIY enthusiasts may be able to diagnose and repair code P2138 themselves, especially if it involves simple tasks like sensor replacement or wiring checks.
10. How often does OBDII code P2138 occur in a 2003 Nissan Altima Sedan?
Code P2138 may occur sporadically or more frequently depending on the driving conditions, maintenance history, and overall condition of the vehicle.
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