Engine-CodesSaturn – P0700 Saturn

P0700 Saturn Code - Transmission Control Module Requested MIL Illumination

Quick Answer

The P0700 code for Saturn vehicles indicates that the transmission control module (TCM) has requested the Malfunction Indicator Lamp (MIL) to be illuminated. Common causes include Faulty transmission control module: The TCM itself may be malfunctioning, causing it to request the MIL illumination, Wiring issues: Loose or damaged wiring connections between the TCM and other transmission components can trigger this code, Low transmission fluid levels: Insufficient transmission fluid can lead to improper transmission operation and trigger the code. 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
P0700 Saturn indicates Transmission Control Module Requested MIL Illumination.
Common causes
Common causes include Faulty transmission control module: The TCM itself may be malfunctioning, causing it to request the MIL illumination, Wiring issues: Loose or damaged wiring connections between the TCM and other transmission components can trigger this code, Low transmission fluid levels: Insufficient transmission fluid can lead to improper transmission operation and trigger the code.
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.
Table of contents Created and updated by William Orellana on Sep 07, 2024
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Code P0700 Saturn Description

The P0700 code for Saturn vehicles indicates that the transmission control module (TCM) has requested the Malfunction Indicator Lamp (MIL) to be illuminated. This means that the TCM has detected an issue within the transmission system that requires attention. The TCM is responsible for controlling various functions within the transmission, such as gear shifting, torque converter lockup, and transmission fluid pressure. When this code is triggered, it is typically a signal that there may be a problem with the transmission that needs to be addressed.

OBDII Code P0700 Saturn - Transmission Control Module Requested MIL Illumination
P0700 Saturn Code - Transmission Control Module Requested MIL Illumination

Common Causes of P0700 Saturn

  1. Faulty transmission control module: The TCM itself may be malfunctioning, causing it to request the MIL illumination.
  2. Wiring issues: Loose or damaged wiring connections between the TCM and other transmission components can trigger this code.
  3. Low transmission fluid levels: Insufficient transmission fluid can lead to improper transmission operation and trigger the code.
  4. Faulty transmission sensors: Sensors responsible for monitoring various transmission parameters may be faulty, causing the TCM to detect an issue.
  5. Internal transmission problems: Internal components such as solenoids, valve bodies, or clutches may be failing, leading to transmission issues and triggering the code.

Symptoms of P0700 Saturn

  1. Delayed or rough shifting: The transmission may experience delays in shifting gears or shift erratically, causing a rough driving experience.
  2. Transmission slipping: The transmission may slip out of gear while driving, leading to a loss of power and acceleration.
  3. Transmission overheating: The transmission may overheat due to improper operation, resulting in a burning smell or smoke coming from the engine bay.
  4. Illuminated warning lights: In addition to the MIL, other warning lights such as the transmission temperature or check engine light may also illuminate on the dashboard.

How to Fix P0700 Saturn

  1. Diagnose the issue: Use a diagnostic scanner to retrieve the specific transmission trouble codes and perform further testing to pinpoint the exact cause of the problem.
  2. Check transmission fluid level and condition: Ensure that the transmission fluid is at the correct level and in good condition. Top off or replace the fluid as needed.
  3. Inspect wiring and connections: Check all wiring connections related to the transmission system for any damage or corrosion. Repair or replace any faulty wiring.
  4. Test transmission sensors: Test the various sensors related to the transmission system to ensure they are functioning correctly. Replace any sensors that are faulty.
  5. Replace the transmission control module: If the TCM is determined to be faulty, it will need to be replaced with a new unit to resolve the issue.

Cost to Fix P0700 Saturn

The cost of repairing a P0700 code on a Saturn vehicle can vary depending on the specific cause of the issue. On average, the parts for this repair can range from $200 to $500, with labor costs adding an additional $100 to $300. Overall, the total repair cost can range from $300 to $800. However, it is essential to note that these are rough estimates, and actual costs may vary based on the extent of the problem, the cost of parts in your area, and the labor rates of the auto repair shop you choose. It is advisable to consult with a certified mechanic to get a more accurate estimate for your specific situation.

Tech Notes for P0700 Saturn

The P0700 code is a generic Diagnostic Trouble Code (DTC) used in OBDII systems to indicate a problem with the transmission control system. It typically means that there are additional specific transmission-related trouble codes stored in the Transmission Control Module (TCM) that need to be retrieved to diagnose the issue further.

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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 P0700 Saturn Code

1. What does OBDII code P0700 on my Saturn mean?

The P0700 code on your Saturn indicates a Transmission Control Module (TCM) has requested the Malfunction Indicator Lamp (MIL) to illuminate due to a transmission-related issue.

2. What are the common symptoms of a P0700 code on a Saturn?

Common symptoms of a P0700 code on a Saturn may include harsh shifting, delayed shifting, transmission slippage, or the transmission going into "limp mode."

3. What are the possible causes of a P0700 code on a Saturn?

Possible causes of a P0700 code on a Saturn include faulty TCM, wiring issues, damaged connectors, low transmission fluid level, or internal transmission problems.

4. How can I diagnose the source of a P0700 code on my Saturn?

Diagnosing a P0700 code on a Saturn typically involves using a diagnostic scanner to retrieve additional transmission-related trouble codes and conducting a thorough inspection of the transmission system.

5. Can I continue driving my Saturn with a P0700 code?

It is not recommended to continue driving your Saturn with a P0700 code, as unresolved transmission issues can lead to further damage and potentially unsafe driving conditions.

6. How can I repair a P0700 code on my Saturn?

Repairing a P0700 code on a Saturn involves identifying and addressing the underlying transmission issue, which may require replacing the TCM, repairing wiring/connectors, or addressing internal transmission problems.

7. Will resetting the OBDII code make the P0700 code go away?

Resetting the OBDII code may temporarily clear the P0700 code, but it will reappear if the underlying transmission issue is not addressed.

8. Is it possible to drive my Saturn to a repair shop with a P0700 code?

If your Saturn is exhibiting severe symptoms such as harsh shifting or transmission slippage, it is advisable to have it towed to a repair shop to prevent further damage.

9. How much does it cost to repair a P0700 code on a Saturn?

The cost of repairing a P0700 code on a Saturn can vary depending on the underlying issue, but it may range from a few hundred to over a thousand dollars, including parts and labor.

10. Can I prevent a P0700 code from occurring on my Saturn?

Regular maintenance of your Saturn's transmission system, including checking transmission fluid levels and addressing any issues promptly, can help prevent the occurrence of a P0700 code.

Discuss the causes and fixes for P0700 Saturn OBDII Code

  • TCM light is on as well as the indicator light for the transmission malfunction(P0700). What is the most common solution for repair(part)

  • The P0700 code means that there is a problem with the transmission. unfortunately there are many thing that can cause problems with the transmission. You need to check for code store in the transmission control unit. With the code from the transmission you should have a better idea what the problem is.

  • i continue to have this code periodically and have found that the issue for me has been a buildup of corrosion on the negative terminal that attaches to the battery side-post and the grounds at the radiator support. Cleaning the flat lug on the cable end, and cleaning up the connections especially at the battery always seems to work for me. It starts manifesting itself as a traction control light, and spreads to multiple dash warnings for abs/esc/and even security and gauge variations along with limp mode and even no-crank issues. These cars are pretty well known for this in various forums.

  • Thank you for sharing!!