P2138 2004 Nissan Maxima 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 Maxima 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 Maxima 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 Maxima?
- 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 Maxima?
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 Maxima 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 Maxima Code
1. What does the OBDII code P2138 on a 2004 Nissan Maxima mean?
The code P2138 indicates an issue with the Accelerator Pedal Position Sensor Circuit Range/Performance.
2. What are the common symptoms of a P2138 code in a 2004 Nissan Maxima?
Common symptoms may include reduced engine power, hesitation or stalling when accelerating, and the vehicle going into limp mode.
3. What are the possible causes of the P2138 code in a 2004 Nissan Maxima?
Potential causes include a faulty accelerator pedal position sensor, issues with the throttle position sensor, wiring or connector problems, or a malfunctioning electronic control module (ECM).
4. How can I diagnose the P2138 code in my 2004 Nissan Maxima?
Diagnosis typically involves checking the accelerator pedal position sensor and throttle position sensor for proper operation, inspecting wiring and connectors for any damage, and using a scan tool to monitor sensor readings.
5. Can I drive my 2004 Nissan Maxima with a P2138 code?
It is not recommended to drive the vehicle with a P2138 code, as it can lead to performance issues and potential safety concerns. It's best to address the issue promptly.
6. How can I repair a P2138 code in a 2004 Nissan Maxima?
Repair options may include replacing the accelerator pedal position sensor, throttle position sensor, repairing damaged wiring or connectors, or reprogramming the ECM.
7. Is it possible to reset the P2138 code in a 2004 Nissan Maxima?
Resetting the code using an OBDII scanner may temporarily clear the code, but if the underlying issue is not addressed, the code is likely to reappear.
8. Can a DIYer fix the P2138 code in a 2004 Nissan Maxima?
Depending on the level of automotive knowledge and experience, some DIYers may be able to diagnose and repair the issue themselves, but others may prefer to seek professional assistance.
9. How much does it cost to repair a P2138 code in a 2004 Nissan Maxima?
The cost of repair can vary depending on the specific cause of the code and whether you choose to do the repairs yourself or take the vehicle to a mechanic. Costs may range from a few hundred to a few thousand dollars.
10. How can I prevent the P2138 code from appearing in my 2004 Nissan Maxima in the future?
Regularly inspecting and maintaining the accelerator pedal position sensor, throttle position sensor, and related components can help prevent the recurrence of the P2138 code.
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