P2138 2004 Infiniti G35 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 Infiniti G35 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 Infiniti G35 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 Infiniti G35?
- 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 Infiniti G35?
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 Infiniti G35 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 Infiniti G35 Code
1. What does the OBDII code P2138 indicate on a 2004 Infiniti G35?
The code P2138 indicates that there is a problem with the Accelerator Pedal Position (APP) Sensor, specifically a range/performance issue in the sensor's output compared to what the engine control module expects.
2. What are common symptoms of code P2138 in a 2004 Infiniti G35?
Symptoms include erratic or unresponsive throttle response, the engine entering limp mode, reduced engine power, and the illumination of the check engine light.
3. What causes the P2138 code to appear on a 2004 Infiniti G35?
Causes can include faulty or misaligned accelerator pedal position sensors, poor electrical connections within the sensor circuit, or a faulty engine control module.
4. How can I diagnose the problem causing a P2138 code in a 2004 Infiniti G35?
Diagnosis should start with checking the accelerator pedal position sensor and its connections for any signs of damage or corrosion. Use a multimeter to check for proper voltage and ground supplies. Additionally, scanning the vehicle with an OBD-II scanner can verify the sensor's output readings.
5. What is the repair process for fixing the P2138 code on a 2004 Infiniti G35?
Repair may involve cleaning or reconnecting the APP sensor's connectors, replacing the APP sensor if it is faulty, or repairing any damaged wiring found during the diagnostic process.
6. Is it safe to drive a 2004 Infiniti G35 with a P2138 code?
Driving with this code can be risky as it affects the throttle response. It's advisable to address the issue promptly to avoid situations where the vehicle may not accelerate as expected.
7. Can a faulty APP sensor impact fuel economy in a 2004 Infiniti G35?
Yes, a malfunctioning APP sensor can lead to poor throttle control, which might result in inefficient fuel usage and reduced overall fuel economy.
8. What tools are needed to diagnose and repair a P2138 code on a 2004 Infiniti G35?
Tools needed include an OBD-II scanner, a multimeter for electrical tests, and basic hand tools for accessing and replacing components.
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