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Engine-Codes – Generic – P1733

P1733 Code - Problem In Shift Control System

Quick Answer

The diagnostic trouble code P1733 indicates a problem in the shift control system of a vehicle. Common causes include Low transmission fluid level: One of the most common causes of shift control system issues is low transmission fluid, Insufficient fluid levels can lead to improper lubrication and cooling of the transmission components, resulting in poor shifting performance, Faulty shift solenoids: The shift solenoids are responsible for controlling the flow of transmission fluid to engage different gears. 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
P1733 indicates Problem In Shift Control System.
Common causes
Common causes include Low transmission fluid level: One of the most common causes of shift control system issues is low transmission fluid, Insufficient fluid levels can lead to improper lubrication and cooling of the transmission components, resulting in poor shifting performance, Faulty shift solenoids: The shift solenoids are responsible for controlling the flow of transmission fluid to engage different gears.
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 P1733 Description

The diagnostic trouble code P1733 indicates a problem in the shift control system of a vehicle. This code is related to the automatic transmission system, specifically in the way it shifts gears. When this code is triggered, it means that the vehicle's onboard computer has detected an issue with the transmission's ability to shift properly. This can lead to a variety of performance issues and potential long-term effects if not addressed promptly.

OBDII Code P1733 - Problem In Shift Control System
P1733 Code - Problem In Shift Control System

Common Causes of P1733

  1. Low transmission fluid level: One of the most common causes of shift control system issues is low transmission fluid. Insufficient fluid levels can lead to improper lubrication and cooling of the transmission components, resulting in poor shifting performance.
  2. Faulty shift solenoids: The shift solenoids are responsible for controlling the flow of transmission fluid to engage different gears. If these solenoids are faulty or malfunctioning, it can cause shifting problems.
  3. Wiring or electrical issues: Problems with the wiring or electrical connections related to the shift control system can also trigger the P1733 code. This could be due to damaged wiring, loose connections, or a faulty transmission control module.
  4. Mechanical issues: Internal mechanical problems within the transmission, such as a worn clutch pack, damaged gears, or a faulty valve body, can also lead to shift control system issues.

Symptoms of P1733

  1. Rough or harsh shifting
  2. Delayed or erratic shifting
  3. Transmission slipping
  4. Transmission getting stuck in one gear
  5. Illuminated check engine light

How to Fix P1733

  1. Check transmission fluid level and condition: Start by checking the transmission fluid level and condition. If the fluid is low or dirty, it should be topped up or replaced accordingly.
  2. Inspect and test shift solenoids: The shift solenoids should be inspected and tested for proper operation. If any solenoids are found to be faulty, they should be replaced.
  3. Check wiring and electrical connections: Inspect the wiring and electrical connections related to the shift control system for any damage or loose connections. Repair or replace as needed.
  4. Perform a transmission fluid flush and filter replacement: A transmission fluid flush and filter replacement can help ensure proper lubrication and cooling of the transmission components, improving shifting performance.
  5. Reset the transmission control module: In some cases, resetting the transmission control module may help clear the P1733 code and resolve the issue. This can be done using a diagnostic scan tool.

Cost to Fix P1733

The cost of repairing a shift control system issue can vary depending on the specific cause of the problem and the extent of the repairs needed. On average, the typical repair costs for this issue can range from $200 to $800, including parts and labor. However, it's important to note that the actual cost can be higher or lower based on factors such as the vehicle make and model, the severity of the issue, and the rates charged by the auto repair shop. Additionally, diagnosis time and labor rates at different repair shops can vary, with hourly rates typically ranging between $80 and $150. It's advisable to consult with a professional mechanic to get an accurate estimate for the repair.

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Code P1733 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 P1733 Code

1. What are common symptoms of OBDII code P1733 (Problem In Shift Control System)?

Symptoms may include harsh shifting, delayed shifting, transmission slippage, or the transmission staying in one gear.

2. What are possible causes of OBDII code P1733?

Potential causes include low transmission fluid levels, a faulty shift control solenoid, electrical issues in the transmission system, or a malfunctioning transmission control module.

3. How can I diagnose OBDII code P1733 at home?

You can start by checking the transmission fluid level and condition, inspecting for any visible damage or leaks in the transmission system, and using an OBDII scanner to read and clear the code.

4. Can driving with OBDII code P1733 cause further damage to my vehicle?

Continuing to drive with this code may lead to increased wear and tear on the transmission components, potentially resulting in more severe transmission issues over time.

5. How much does it typically cost to repair OBDII code P1733?

The cost of repairs can vary depending on the exact cause of the code, but it may range from a few hundred to over a thousand dollars, including parts and labor.

6. Are there any DIY repair tips for addressing OBDII code P1733?

While some simple checks like inspecting the transmission fluid level can be done at home, diagnosing and repairing the underlying issues causing P1733 may require professional expertise and specialized tools.

7. Is it safe to continue driving my vehicle with OBDII code P1733?

It is not recommended to ignore this code and continue driving, as it could lead to further transmission problems and potential safety hazards on the road.

8. How urgent is it to address OBDII code P1733?

It is advisable to address this code as soon as possible to prevent possible damage to the transmission system and ensure the safe operation of your vehicle.

9. Can resetting the OBDII code P1733 on my own fix the issue?

Resetting the code may temporarily clear the warning light, but it will not resolve the underlying problem causing the shift control system issue.

10. How can I prevent OBDII code P1733 from recurring in the future?

Regularly maintaining your vehicle, including checking and changing the transmission fluid as recommended by the manufacturer, can help prevent this code from reoccurring.

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