Engine-CodesInfiniti – P0705 Infiniti

P0705 Infiniti Code - Park/Neutral Position Switch

Quick Answer

The P0705 diagnostic trouble code (DTC) specifically pertains to the Park/Neutral Position (PNP) switch in Infiniti vehicles. Common causes include Faulty PNP switch due to wear and tear or electrical issues, Corroded or damaged wiring/connectors related to the PNP switch, Misalignment of the PNP switch causing incorrect signal transmission. 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
P0705 Infiniti indicates Park/Neutral Position Switch.
Common causes
Common causes include Faulty PNP switch due to wear and tear or electrical issues, Corroded or damaged wiring/connectors related to the PNP switch, Misalignment of the PNP switch causing incorrect signal transmission.
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.
Table of contents Created and updated by William Orellana on Sep 09, 2024
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Code P0705 Infiniti Description

The P0705 diagnostic trouble code (DTC) specifically pertains to the Park/Neutral Position (PNP) switch in Infiniti vehicles. The PNP switch, also known as the transmission range sensor or neutral safety switch, is a vital component that ensures the transmission is in the proper gear based on the position of the shift lever. This switch plays a crucial role in preventing the vehicle from starting in gear, which could pose a safety hazard.

OBDII Code P0705 Infiniti - Park/Neutral Position Switch
P0705 Infiniti Code - Park/Neutral Position Switch

Common Causes of P0705 Infiniti

  1. Faulty PNP switch due to wear and tear or electrical issues.
  2. Corroded or damaged wiring/connectors related to the PNP switch.
  3. Misalignment of the PNP switch causing incorrect signal transmission.
  4. Issues with the ECM receiving or interpreting signals from the PNP switch.
  5. Impact damage or water intrusion affecting the PNP switch functionality.

Symptoms of P0705 Infiniti

  1. Difficulty starting the vehicle or inability to start the vehicle.
  2. Inability to shift gears or erratic shifting behavior.
  3. Dashboard indicator lights such as the check engine light or transmission warning light.
  4. Engine stalling when coming to a stop or shifting gears.
  5. Limp mode activation, which limits the vehicle's performance to protect the transmission.

How to Fix P0705 Infiniti

  1. Diagnose the P0705 code using a diagnostic scanner to confirm the issue is related to the PNP switch.
  2. Inspect the PNP switch, wiring, and connectors for any visible damage or corrosion.
  3. Replace the PNP switch if it is found to be faulty, ensuring proper alignment during installation.
  4. Clear the DTC and perform a reset procedure to recalibrate the ECM with the new PNP switch.
  5. Test drive the vehicle to verify that the P0705 code has been resolved and that the vehicle operates correctly.

Cost to Fix P0705 Infiniti

The cost of repairing a P0705 code in an Infiniti vehicle can vary depending on the specific model and the extent of the issue. On average, the cost of replacing a PNP switch and addressing related wiring or connector issues can range from $200 to $500, including parts and labor. However, it's important to note that diagnosis time and labor rates at auto repair shops can vary significantly based on location, vehicle make and model, and engine type. It's recommended to obtain quotes from reputable repair facilities to get a more accurate estimate based on your specific situation.

When is the Code Detected?

TCM does not receive the correct voltage signal from the switch based on the gear position

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Information for Specific Infiniti Models

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

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