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P0755 Nissan Code - Shift Control Solenoid 'B' Malfunction

Quick Answer

The P0755 code for Nissan vehicles indicates a malfunction in the Shift Control Solenoid 'B'. Common causes include Faulty Shift Control Solenoid 'B', Damaged or corroded wiring connecting to the solenoid, Low transmission fluid levels or dirty transmission fluid. 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
P0755 Nissan indicates Shift Control Solenoid 'B' Malfunction.
Common causes
Common causes include Faulty Shift Control Solenoid 'B', Damaged or corroded wiring connecting to the solenoid, Low transmission fluid levels or dirty transmission fluid.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 08, 2024
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Code P0755 Nissan Description

The P0755 code for Nissan vehicles indicates a malfunction in the Shift Control Solenoid 'B'. This solenoid is a crucial component of the transmission system that plays a key role in controlling the flow of transmission fluid to facilitate gear shifts. When this solenoid malfunctions, it can lead to various issues with the vehicle's transmission, affecting its performance and drivability.

OBDII Code P0755 Nissan - Shift Control Solenoid 'B' Malfunction
P0755 Nissan Code - Shift Control Solenoid 'B' Malfunction

Common Causes of P0755 Nissan

  1. Faulty Shift Control Solenoid 'B'
  2. Damaged or corroded wiring connecting to the solenoid
  3. Low transmission fluid levels or dirty transmission fluid
  4. Electrical issues within the transmission control module
  5. Mechanical problems within the transmission system

Symptoms of P0755 Nissan

  1. Erratic shifting behavior
  2. Difficulty shifting gears
  3. Harsh or delayed shifts
  4. Slipping gears
  5. Transmission overheating

How to Fix P0755 Nissan

  1. Diagnose the issue by using a scan tool to confirm the P0755 code and inspect the Shift Control Solenoid 'B'.
  2. Check the wiring and connections to ensure they are intact and free of damage.
  3. Inspect the transmission fluid level and quality, topping it up or performing a fluid flush and filter replacement if necessary.
  4. Replace the Shift Control Solenoid 'B' if it is found to be faulty, following manufacturer guidelines for proper installation.
  5. Test drive the vehicle to ensure the shifting behavior is back to normal and that the code does not reappear.

Cost to Fix P0755 Nissan

The cost of repairing a Shift Control Solenoid 'B' malfunction can vary depending on the specific vehicle make and model, the extent of the issue, and labor rates in your area. On average, you can expect to pay anywhere from $200 to $500 for parts and labor. Keep in mind that additional costs may apply if other components need to be replaced or if there are underlying transmission problems that need to be addressed. It's recommended to get a detailed quote from a trusted auto repair shop to determine the precise cost for your situation.

What does this mean?

Tech Notes for P0755 Nissan

When the a transmission solenoid is malfunction, in most cases the problem is not the electrical part of the solenoid; the problem is foreign material obstructing the mechanical function of the solenoid or the flow of the fluid through the transmission valve body. If the transmission fluid is very dirty, it is recommend changing the transmission fluid and if possible removing the transmission pan for further diagnosis. Excessive debris or metal particles on the transmission pan could be an indication that there is a transmission mechanical failure and that the transmission will need to be rebuilt or replaced.

When is the Code Detected?

The P0755 code is detected when TCM detects an improper voltage drop when it tries to operate the solenoid valve.

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Information for Specific Nissan 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.

Frequently Asked Questions about P0755 Nissan Code

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  • my titan just had this problem ,no warnings,just bang went out on freeway !very expensive to replace !

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  • Just need to know location of shift control b on my 2004 Nissan Quest.

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  • The shift control solenoid is part of the solenoid pack and its attached to the valve body inside the transmission. You have to remove the valve body to access and replace the solenoid pack.

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