P2138 Infiniti 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 Infiniti 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 Infiniti 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 Infiniti?
- 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 Infiniti?
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 Infiniti 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.
Need more information about the P2138 Infiniti code?
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Need Help with the Code?
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Information for Specific Infiniti Models
- P2138 2003 Infiniti G35 — Accelerator Pedal Position Sensor Circuit Range/Performance
- P2138 2004 Infiniti G35 — Accelerator Pedal Position Sensor Circuit Range/Performance
- P2138 2005 Infiniti G35 — Accelerator Pedal Position Sensor Circuit Range/Performance
- P2138 2006 Infiniti G35 — Accelerator Pedal Position Sensor Circuit Range/Performance
Frequently Asked Questions about P2138 Infiniti Code
1. What are the common symptoms of OBDII code P2138 in an Infiniti?
Common symptoms include reduced engine power, hesitation or stalling when accelerating, and the vehicle going into limp mode.
2. What causes the OBDII code P2138 in an Infiniti?
The code is typically triggered by a fault in the accelerator pedal position sensor circuit, which may be caused by a faulty sensor, wiring issues, or a problem with the throttle body.
3. How serious is the OBDII code P2138 in an Infiniti?
This code should be taken seriously as it can affect the drivability of the vehicle and may lead to unsafe driving conditions. It is important to address the issue promptly to prevent further damage.
4. Can I still drive my Infiniti with the OBDII code P2138 present?
It is not recommended to drive the vehicle with this code present, as it can lead to performance issues and potential safety hazards. It is best to have the issue diagnosed and repaired before driving the vehicle again.
5. How can I diagnose the OBDII code P2138 in my Infiniti?
Diagnosing this code typically involves using a scan tool to read the code and then testing the accelerator pedal position sensor, throttle body, and associated wiring for faults.
6. What are some repair options for the OBDII code P2138 in an Infiniti?
Repair options may include replacing the accelerator pedal position sensor, repairing or replacing damaged wiring, cleaning the throttle body, or reprogramming the vehicle's computer.
7. Can a DIY enthusiast fix the OBDII code P2138 in an Infiniti?
While some simple repairs like cleaning the throttle body or checking for loose connections can be done by DIY enthusiasts, diagnosing and repairing the root cause of the code may require professional expertise.
8. How much does it cost to fix the OBDII code P2138 in an Infiniti?
The cost of fixing this code can vary depending on the exact cause of the issue and the labor rates in your area. It is recommended to get a diagnostic inspection to get a more accurate estimate.
9. Will resetting the OBDII code P2138 make it go away permanently?
Resetting the code may temporarily clear the warning light, but if the underlying issue is not addressed, the code is likely to return. It is important to diagnose and repair the root cause of the problem.
10. Is the OBDII code P2138 specific to certain Infiniti models?
While the code is commonly associated with various Infiniti models, it can occur in other vehicles as well. It is always best to refer to the specific diagnostic information for your vehicle to ensure accurate diagnosis and repair.
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