AutoCodes – Nissan – P0755 2004 Nissan Altima Sedan

P0755 2004 Nissan Altima Sedan 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 2004 Nissan Altima Sedan 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 3,089

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 2004 Nissan Altima Sedan Description

OBDII Code P0755 2004 Nissan Altima Sedan - Shift Control Solenoid 'B' Malfunction - AutoCodes.com — P0755 2004 Nissan Altima Sedan Code - Shift Control Solenoid 'B' Malfunction

What does this mean?

What are the Possible Causes of the DTC P0755 2004 Nissan Altima Sedan?

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 2004 Nissan Altima Sedan?

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 2004 Nissan Altima Sedan 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 2004 Nissan Altima Sedan Code

1. What does OBDII code P0755 mean for a 2004 Nissan Altima?

P0755 indicates a malfunction in the Shift Solenoid 'B' circuit, which controls gear shifting within the automatic transmission.

2. What are the symptoms of the P0755 code?

Symptoms may include harsh or delayed shifting, being stuck in one gear, erratic shifting, and the illumination of the Check Engine Light.

3. What causes the P0755 code to appear?

Common causes include a faulty shift solenoid, damaged wiring or connectors, low or dirty transmission fluid, or issues with the transmission control module (TCM).

4. How do I diagnose the P0755 code on a 2004 Nissan Altima?

Start by checking the transmission fluid level and condition. Then inspect the solenoid wiring and connectors for damage. If no issues are found, test the shift solenoid for proper operation using a multimeter.

5. Can I drive my 2004 Nissan Altima with the P0755 code?

Driving with this code is not recommended as it can lead to further transmission damage and unpredictable shifting, which may compromise safety.

6. How do I fix the P0755 code?

Repairs may include replacing the shift solenoid, repairing or replacing damaged wiring, cleaning or replacing the transmission fluid, or addressing issues with the TCM.

7. How much does it cost to repair the P0755 code?

Costs vary but replacing a shift solenoid typically ranges from $150 to $400, including parts and labor. Wiring repairs or fluid service may be less expensive.

8. Can dirty transmission fluid cause the P0755 code?

Yes, dirty or degraded transmission fluid can lead to clogging or improper solenoid operation, triggering the P0755 code.

9. Where is Shift Solenoid 'B' located in a 2004 Nissan Altima?

Shift Solenoid 'B' is located inside the transmission, typically mounted to the valve body.

10. Do I need a professional to fix the P0755 code?

While some issues like fluid changes or visual inspections can be done by DIYers, diagnosing and replacing transmission components may require professional expertise and tools.