P2138 2012 Nissan Pathfinder 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 2012 Nissan Pathfinder 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 2012 Nissan Pathfinder 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 2012 Nissan Pathfinder?
- 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 2012 Nissan Pathfinder?
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 2012 Nissan Pathfinder 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 2012 Nissan Pathfinder Code
1. What are the common symptoms of OBDII code P2138 in a 2012 Nissan Pathfinder?
- Common symptoms include a lack of acceleration, reduced engine power, and the vehicle going into limp mode.
2. What causes the OBDII code P2138 in a 2012 Nissan Pathfinder?
- The code is typically triggered by issues with the accelerator pedal position sensor or its circuit, such as sensor malfunction, wiring issues, or a faulty connection.
3. How can I diagnose the OBDII code P2138 in my 2012 Nissan Pathfinder?
- Diagnosis involves using a scan tool to read the code, checking the accelerator pedal position sensor and its wiring for any visible damage, and testing the sensor's voltage and resistance.
4. Can a dirty throttle body cause OBDII code P2138 in a 2012 Nissan Pathfinder?
- While a dirty throttle body can impact throttle response, it is unlikely to directly trigger P2138. Focus on checking the accelerator pedal position sensor and related components.
5. What are some repair tips for addressing OBDII code P2138 in a 2012 Nissan Pathfinder?
- Repair tips include inspecting and cleaning the accelerator pedal position sensor, checking and repairing any damaged wiring, and ensuring proper sensor calibration.
6. Is it safe to continue driving with OBDII code P2138 in my 2012 Nissan Pathfinder?
- It is not recommended to drive the vehicle with P2138 as it can lead to unsafe driving conditions due to reduced engine power and potential loss of control.
7. Can resetting the OBDII code P2138 in my 2012 Nissan Pathfinder fix the issue?
- Resetting the code may temporarily turn off the check engine light, but it won't address the underlying problem causing P2138. Proper diagnosis and repair are necessary.
8. How much does it typically cost to repair OBDII code P2138 in a 2012 Nissan Pathfinder?
- The cost of repairs can vary depending on the exact cause of the issue, but it may involve sensor replacement, wiring repairs, or professional diagnostic services.
9. Will OBDII code P2138 affect the fuel efficiency of my 2012 Nissan Pathfinder?
- Yes, P2138 can impact fuel efficiency as the engine may not be able to operate optimally, leading to increased fuel consumption.
10. Can a DIY enthusiast fix OBDII code P2138 in a 2012 Nissan Pathfinder?
- While some basic troubleshooting like checking connections and cleaning sensors can be done DIY, for more complex issues, it's advisable to seek professional help to ensure proper diagnosis and repair.
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