AutoCodes – Infiniti – P0755 Infiniti

P0755 Infiniti Code - Shift Control Solenoid 'B' Malfunction

Quick Answer

Shift solenoid valve B is turned ON or OFF by the Transmission Control Module (TCM) in response to signals sent from the park/neutral position (PNP) switch, vehicle speed and Engine Control Module (ECM) (throttle opening). Common causes include Low transmission fluid level, Dirty transmission fluid, Faulty shift solenoid 'B' valve. 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 Infiniti indicates Shift Control Solenoid 'B' Malfunction.
Common causes: Common causes include Low transmission fluid level, Dirty transmission fluid, Faulty shift solenoid 'B' valve.
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.

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Code Popularity 5,808

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jun 14, 2020

Description
Step-by-Step Diagnostic Guide
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code P0755 Infiniti Description

OBDII Code P0755 Infiniti - Shift Control Solenoid 'B' Malfunction - AutoCodes.com — P0755 Infiniti Code - Shift Control Solenoid 'B' Malfunction

What does this mean?

What are the Possible Causes of the DTC P0755 Infiniti?

Low transmission fluid level
Dirty transmission fluid
Faulty shift solenoid 'B' valve
Shift solenoid 'B' valve harness is open or shorted
Shift solenoid 'B' valve circuit poor electrical connection

How to Fix the DTC P0755 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 does this mean?

Code Tech Notes

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.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0755 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.

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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 Infiniti Code

1. What are the common symptoms of OBDII code P0755 in an Infiniti related to Shift Control Solenoid 'B' Malfunction?

The common symptoms include harsh or delayed shifting, erratic transmission behavior, and the transmission staying in one gear.

2. What are the possible causes of OBDII code P0755 in an Infiniti?

The Shift Control Solenoid 'B' Malfunction in an Infiniti can be caused by a faulty shift solenoid, low transmission fluid level, a clogged transmission filter, or wiring issues.

3. How serious is the OBDII code P0755 in an Infiniti?

Ignoring OBDII code P0755 can lead to further damage to the transmission system, resulting in costly repairs. It is recommended to address the issue promptly.

4. Can I continue driving my Infiniti with OBDII code P0755 present?

It is not recommended to continue driving your Infiniti with OBDII code P0755, as it can cause further damage to the transmission system. It's best to have the issue diagnosed and repaired as soon as possible.

5. How can I diagnose OBDII code P0755 in my Infiniti at home?

You can diagnose OBDII code P0755 by using an OBDII scanner to retrieve the trouble code, checking the transmission fluid level and condition, and inspecting the wiring connected to Shift Control Solenoid 'B'.

6. What are some repair tips for fixing OBDII code P0755 in an Infiniti?

Repair tips for resolving Shift Control Solenoid 'B' Malfunction include replacing the faulty shift solenoid, checking and replenishing the transmission fluid, and inspecting the wiring for any damage or loose connections.

7. How much does it cost to repair OBDII code P0755 in an Infiniti?

The cost of repairing OBDII code P0755 can vary depending on the root cause of the issue, the extent of the damage, and labor costs. It's advisable to get a diagnostic done by a professional to get an accurate estimate.

8. Can a DIY enthusiast fix OBDII code P0755 in an Infiniti?

While some simple tasks like checking the transmission fluid level can be done by a DIY enthusiast, diagnosing and repairing Shift Control Solenoid 'B' Malfunction may require specialized tools and expertise. It's recommended to seek professional help for this issue.

9. How long does it take to repair OBDII code P0755 in an Infiniti?

The repair time for OBDII code P0755 can vary depending on the exact cause of the issue, availability of parts, and the expertise of the mechanic. It's best to consult with a professional for a more accurate estimate of the repair time.

10. Can resetting the OBDII code P0755 in an Infiniti fix the issue?

Resetting the OBDII code may temporarily clear the warning light, but it will not fix the underlying problem causing Shift Control Solenoid 'B' Malfunction. It's important to address the root cause of the issue to prevent further transmission damage.