AutoCodes – Generic – P1751

P1751 Code - Mechanical Problem In Hydraulic Control System Of Shift Solenoid Valve 'B'

Quick Answer

The Transmission Control Module (TCM) monitors the Shift Solenoid Valve 'B'. Common causes include Low Automatic Transmission Fluid Level, Faulty Shift Solenoid Valve 'B', Shift Solenoid Valve 'B' harness is open or shorted. 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
P1751 indicates Mechanical Problem In Hydraulic Control System Of Shift Solenoid Valve 'B'.
Common causes
Common causes include Low Automatic Transmission Fluid Level, Faulty Shift Solenoid Valve 'B', Shift Solenoid Valve 'B' harness is open or shorted.
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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 52,868
How popular is this code, among other codes? Medium
Table of contents Created and updated by William Orellana on Aug 15, 2020
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Code P1751 Description

The Transmission Control Module (TCM) monitors the Shift Solenoid Valve 'B'. The TCM sets the OBDII code when the Shift Solenoid Valve 'B' is not to factory specifications.
OBDII Code P1751 - Mechanical Problem In Hydraulic Control System Of Shift Solenoid Valve 'B' - AutoCodes.com
P1751 Code - Mechanical Problem In Hydraulic Control System Of Shift Solenoid Valve 'B'

What are the Possible Causes of the DTC P1751?

  • Low Automatic Transmission Fluid Level
  • Faulty Shift Solenoid Valve 'B'
  • Shift Solenoid Valve 'B' harness is open or shorted
  • Shift Solenoid Valve 'B' circuit poor electrical connection

How to Fix the DTC P1751?

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 P1751 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.

Need more information about the P1751 code?

Need more information on how to fix the P1751 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1751 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

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 P1751 Code

1. What are the common symptoms of OBDII code P1751?

The common symptoms of code P1751 include harsh shifting, delayed shifting, or failure to shift gears properly.

2. What can cause OBDII code P1751 to trigger?

Code P1751 is typically triggered by a mechanical problem in the hydraulic control system of shift solenoid valve 'B', which can be caused by issues such as a faulty solenoid, low transmission fluid, or a clogged transmission filter.

3. How can I diagnose the mechanical problem in the hydraulic control system of shift solenoid valve 'B'?

Diagnosing the issue may involve performing a visual inspection of the transmission components, checking the transmission fluid level and condition, and using a scan tool to read the trouble codes stored in the vehicle's computer.

4. What are some repair tips for addressing OBDII code P1751?

Repair tips may include replacing the faulty shift solenoid valve 'B', ensuring the transmission fluid is at the correct level and in good condition, and cleaning or replacing the transmission filter if necessary.

5. Can driving with OBDII code P1751 cause further damage to the vehicle?

Continuing to drive with code P1751 may cause additional wear and tear on the transmission components and lead to more serious transmission issues over time. It is recommended to address the problem promptly.

6. How much does it typically cost to repair OBDII code P1751?

The cost of repairing code P1751 can vary depending on the cause of the problem, the extent of the damage, and the labor rates in your area. It is advisable to consult a professional mechanic for an accurate estimate.

7. Is it safe to continue driving my vehicle with OBDII code P1751?

While it may be possible to drive the vehicle with code P1751, it is not recommended as it can lead to further transmission issues and potential safety hazards. It is best to address the problem as soon as possible.

8. Can a DIY enthusiast repair OBDII code P1751 at home?

Repairing code P1751 may require specialized tools and expertise, so it is recommended to have the issue diagnosed and repaired by a qualified mechanic to ensure proper resolution and prevent further damage.

9. How long does it take to fix OBDII code P1751?

The time required to fix code P1751 can vary depending on the specific cause of the issue, the availability of parts, and the mechanic's workload. It is best to consult with a professional for a more accurate timeframe.

10. How can I prevent OBDII code P1751 from recurring in the future?

To prevent code P1751 from recurring, it is important to maintain regular transmission fluid changes, address any transmission issues promptly, and follow the manufacturer's recommended maintenance schedule for your vehicle.

Discuss the causes and fixes for P1751 OBDII Code

  • P1751 mitz gallant The car will push 70mph in 1st at 3000 rpm so why soil your hands changing a shift solenoid, it's a throwaway car[sorry galant owners]

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