AutoCodes – Saturn – P0702 Saturn

P0702 Saturn Code - Transaxle Control System Low Voltage

Quick Answer

Each transaxle solenoid (TCC, pressure control, shift 2, shift 3, and shift 4) ground is controlled independently by the Powertrain Control Module (PCM). Common causes include Faulty Powertrain Control Module (PCM), Powertrain Control Module harness is open or shorted, Powertrain Control Module circuit poor electrical connection. 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: P0702 Saturn indicates Transaxle Control System Low Voltage.
Common causes: Common causes include Faulty Powertrain Control Module (PCM), Powertrain Control Module harness is open or shorted, Powertrain Control Module circuit poor electrical connection.
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 964

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 May 23, 2021

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0702 Saturn Description

Each transaxle solenoid (TCC, pressure control, shift 2, shift 3, and shift 4) ground is controlled independently by the Powertrain Control Module (PCM). However, the PCM also controls ignition voltage simultaneously to all 5 solenoids whenever the fuel pump relay is commanded on. The Diagnostic Trouble Code (DTC) P0702 sets when the PCM detects low feedback voltage to all 5 solenoids when the engine is running, and the fuel pump relay is commanded on.

OBDII Code P0702 Saturn - Transaxle Control System Low Voltage - AutoCodes.com — P0702 Saturn Code - Transaxle Control System Low Voltage

What does this mean?

What are the Possible Causes of the DTC P0702 Saturn?

Faulty Powertrain Control Module (PCM)
Powertrain Control Module harness is open or shorted
Powertrain Control Module circuit poor electrical connection

How to Fix the DTC P0702 Saturn?

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 P0702 Saturn 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 P0702 Saturn code?

Need more information on how to fix the P0702 Saturn code? Get Access to Factory Service Manuals

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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 P0702 Saturn Code

1. What are the common symptoms of OBDII code P0702 on a Saturn vehicle?

- Common symptoms include issues with shifting gears, transmission slipping, poor fuel economy, and the transmission staying in one gear.

2. What can cause the OBDII code P0702 on a Saturn vehicle?

- The most common cause of P0702 is a malfunction in the transaxle control module, low voltage in the control circuit, or a faulty wiring connection.

3. How can I diagnose the OBDII code P0702 on my Saturn?

- You can diagnose P0702 by using an OBDII scanner to read the code, checking the wiring connections for any damage, and testing the transaxle control module for proper voltage.

4. Can driving with the OBDII code P0702 cause further damage to my Saturn transmission?

- Continuing to drive with P0702 can potentially cause damage to the transmission, as it may not shift properly and experience increased wear and tear.

5. How can I repair the OBDII code P0702 on my Saturn?

- Repair options include replacing the transaxle control module, repairing any damaged wiring connections, and ensuring the control circuit is functioning correctly.

6. Can a DIY enthusiast fix the OBDII code P0702 on a Saturn, or is professional help recommended?

- While some DIY enthusiasts may be able to address P0702 themselves by following proper diagnostic procedures, professional help is recommended for those with limited experience.

7. Is it safe to drive my Saturn with the OBDII code P0702 if I am unable to repair it immediately?

- It is not recommended to drive your Saturn with P0702 for an extended period, as it can lead to transmission issues and potentially cause safety hazards on the road.

8. Are there any preventive measures I can take to avoid the OBDII code P0702 on my Saturn in the future?

- Regular maintenance of your Saturn's transmission system, such as checking for loose wiring connections and ensuring the control module is functioning properly, can help prevent P0702.

9. How long does it typically take to repair the OBDII code P0702 on a Saturn at a professional auto repair shop?

- The repair time for P0702 can vary depending on the exact cause and extent of the issue, but it may take a few hours to a full day for a professional to diagnose and fix the problem.

10. Will resetting the OBDII code P0702 on my Saturn resolve the issue temporarily?

- Resetting the code may temporarily turn off the check engine light, but if the underlying issue causing P0702 is not addressed, the code is likely to reappear.