P2138 2004 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 2004 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 2004 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 2004 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 2004 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 2004 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 2004 Nissan Altima Sedan Code
1. What is OBDII code P2138 in a 2004 Nissan Altima Sedan?
- OBDII code P2138 indicates an issue with the Accelerator Pedal Position Sensor Circuit Range/Performance in a 2004 Nissan Altima Sedan.
2. What are the common symptoms of OBDII code P2138 in a 2004 Nissan Altima Sedan?
- Common symptoms of P2138 may include reduced engine power, hesitation or stalling when accelerating, and the vehicle going into limp mode.
3. What are the possible causes of OBDII code P2138 in a 2004 Nissan Altima Sedan?
- The potential causes of P2138 include a faulty accelerator pedal position sensor, a malfunctioning throttle body, wiring or connector issues, or a problem with the engine control module.
4. How can I diagnose the issue related to OBDII code P2138 in my 2004 Nissan Altima Sedan?
- To diagnose P2138, you can use an OBDII scanner to read the code and then inspect the accelerator pedal position sensor, throttle body, wiring connections, and the engine control module for any signs of damage or malfunction.
5. Can I continue driving my 2004 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 or safety hazards. It's best to address the issue promptly.
6. How can I repair OBDII code P2138 in my 2004 Nissan Altima Sedan?
- Repairing P2138 may involve replacing the accelerator pedal position sensor, repairing or replacing wiring connections, cleaning or replacing the throttle body, or reprogramming the engine control module.
7. Is it possible to reset OBDII code P2138 in a 2004 Nissan Altima Sedan without repairing the issue?
- Resetting the code without addressing the underlying problem may temporarily turn off the check engine light, but the issue will likely recur. It's important to diagnose and repair the root cause.
8. How much does it cost to fix OBDII code P2138 in a 2004 Nissan Altima Sedan?
- The cost of fixing P2138 can vary depending on the specific cause of the issue, parts needed for replacement, labor costs, and whether you choose to DIY or take it to a professional mechanic.
9. Can a DIY enthusiast fix OBDII code P2138 in a 2004 Nissan Altima Sedan?
- A DIY enthusiast with the necessary tools and skills may be able to address P2138 by following repair guides, but it's essential to have a good understanding of automotive systems to ensure proper diagnosis and repair.
10. How often does OBDII code P2138 occur in 2004 Nissan Altima Sedans?
- OBDII code P2138 related to the Accelerator Pedal Position Sensor Circuit Range/Performance may occur occasionally in 2004 Nissan Altima Sedans, especially as the vehicle ages and components wear out.
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