P2138 2008 Nissan Sentra 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 2008 Nissan Sentra 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 2008 Nissan Sentra 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 2008 Nissan Sentra?
- Faulty Accelerator Pedal Position Sensor
- Accelerator Pedal Position Sensor harness is open or shorted
- Accelerator Pedal Position Sensor circuit poor electrical connection
- Crankshaft position sensor (POS)
- Refrigerant pressure sensor
- EVAP control system pressure sensor
How to Fix the DTC P2138 2008 Nissan Sentra?
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 2008 Nissan Sentra 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 2008 Nissan Sentra Code
1. What are the common symptoms of OBDII code P2138 in a 2008 Nissan Sentra?
The common symptoms of OBDII code P2138 in a 2008 Nissan Sentra include reduced engine power, hesitation or stalling when accelerating, and a lit-up Check Engine Light.
2. What does the OBDII code P2138 in a 2008 Nissan Sentra indicate?
OBDII code P2138 in a 2008 Nissan Sentra indicates a malfunction in the Accelerator Pedal Position Sensor Circuit Range/Performance.
3. What are the possible causes of OBDII code P2138 in a 2008 Nissan Sentra?
Possible causes of OBDII code P2138 in a 2008 Nissan Sentra include a faulty accelerator pedal position sensor, issues with the throttle position sensor, wiring or connector issues, or a problem with the electronic throttle control system.
4. How can I diagnose the OBDII code P2138 in my 2008 Nissan Sentra?
Diagnosing OBDII code P2138 in a 2008 Nissan Sentra involves using a scan tool to retrieve the trouble codes, inspecting the accelerator pedal position sensor and related components for damage, and testing the sensor's voltage and resistance.
5. Can I continue to drive my 2008 Nissan Sentra with OBDII code P2138?
It is not recommended to continue driving your 2008 Nissan Sentra with OBDII code P2138, as it can lead to further damage to the engine or drivability issues. It is best to address the issue promptly.
6. How can I repair OBDII code P2138 in my 2008 Nissan Sentra?
Repairing OBDII code P2138 in a 2008 Nissan Sentra may involve replacing the accelerator pedal position sensor, repairing any wiring or connector issues, or recalibrating the electronic throttle control system.
7. Are there any DIY tips for addressing OBDII code P2138 in my 2008 Nissan Sentra?
While some may attempt DIY repairs for OBDII code P2138, it is recommended to consult a professional mechanic for proper diagnosis and repair to ensure the issue is resolved correctly.
8. How much does it typically cost to fix OBDII code P2138 in a 2008 Nissan Sentra?
The cost to fix OBDII code P2138 in a 2008 Nissan Sentra can vary depending on the underlying cause of the issue, but it may range from $200 to $500 or more, including parts and labor.
9. Can resetting the ECU clear OBDII code P2138 in my 2008 Nissan Sentra?
Resetting the ECU may temporarily clear the OBDII code P2138, but if the underlying issue is not addressed, the code is likely to reappear. It is best to diagnose and repair the root cause of the problem.
10. Is OBDII code P2138 a common issue in 2008 Nissan Sentras?
While OBDII code P2138 is not extremely common in 2008 Nissan Sentras, it can occur due to sensor or system failures. Proper maintenance and addressing any related issues promptly can help prevent this code from appearing.
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