P2138 2009 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 2009 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 2009 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 2009 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 2009 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 2009 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 2009 Nissan Sentra Code
1. What are the common symptoms of OBDII code P2138 in a 2009 Nissan Sentra?
- Common symptoms include loss of power, engine hesitation, and in some cases, the vehicle may go into "limp mode."
2. What can cause the OBDII code P2138 to appear in a 2009 Nissan Sentra?
- The code P2138 is typically triggered by issues with the accelerator pedal position sensor or the throttle position sensor.
3. How serious is the OBDII code P2138 in a 2009 Nissan Sentra?
- This code is considered serious as it can affect the drivability of the vehicle and may lead to unsafe driving conditions if not addressed promptly.
4. Can I still drive my 2009 Nissan Sentra with the OBDII code P2138?
- It is not recommended to drive the vehicle with this code present, as it may lead to further damage or safety risks.
5. How can I diagnose the OBDII code P2138 in my 2009 Nissan Sentra?
- Diagnosing the issue typically involves using a scan tool to check for the code, inspecting the accelerator pedal position sensor, and testing the throttle position sensor.
6. Is it possible to reset the OBDII code P2138 in a 2009 Nissan Sentra?
- While you can clear the code with a scan tool, it is important to address the underlying issue causing the code to prevent it from reoccurring.
7. What are some repair tips for fixing the OBDII code P2138 in a 2009 Nissan Sentra?
- Repair tips may include checking the wiring harness for damage, ensuring proper sensor connections, and replacing the faulty sensor if needed.
8. Can a DIY enthusiast fix the OBDII code P2138 in a 2009 Nissan Sentra?
- Depending on your mechanical skills and access to tools, some DIY enthusiasts may be able to diagnose and repair this issue. However, it is recommended to consult a professional if unsure.
9. How much does it cost to repair the OBDII code P2138 in a 2009 Nissan Sentra?
- The cost of repairs can vary depending on the root cause of the issue, but it may involve sensor replacement, which can range from $100 to $300 or more, including labor costs.
10. How often does the OBDII code P2138 occur in a 2009 Nissan Sentra?
- While not extremely common, this code can still occur due to sensor failures, wiring issues, or other related problems in the accelerator pedal position circuit.
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