P0702 Buick 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 Buick 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.
Code P0702 Buick Description
What are the Possible Causes of the DTC P0702 Buick?
- 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 Buick?
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 Buick 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 Buick code?
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Frequently Asked Questions about P0702 Buick Code
1. What are the common symptoms of OBDII code P0702 in a Buick related to the transaxle control system low voltage?
- Common symptoms include issues with shifting gears, transmission slippage, illuminated check engine light, and reduced fuel efficiency.
2. What can cause the OBDII code P0702 to trigger in a Buick's transaxle control system?
- The code may be triggered by a faulty transmission control module (TCM), damaged wiring or connectors, low battery voltage, or a defective shift solenoid.
3. How can one diagnose the underlying issue causing the P0702 code in a Buick?
- Diagnosis typically involves using a diagnostic scanner to retrieve the code, checking the TCM for faults, inspecting wiring and connectors for damage, and testing the shift solenoid for proper function.
4. Can a DIY enthusiast repair the OBDII code P0702 in a Buick related to the transaxle control system low voltage?
- While some simple checks like inspecting wiring connections can be done by a DIYer, diagnosing and repairing complex issues with the TCM or shift solenoid may require professional expertise.
5. What are the potential risks of ignoring the OBDII code P0702 in a Buick's transaxle control system?
- Ignoring this code can lead to further damage to the transmission system, potentially resulting in costly repairs or even complete transmission failure.
6. Are there any preventive maintenance tips to avoid triggering the OBDII code P0702 in a Buick?
- Regularly checking and maintaining the transmission fluid level, ensuring proper battery voltage, and promptly addressing any transmission issues can help prevent the occurrence of this code.
7. How much does it typically cost to repair the OBDII code P0702 in a Buick's transaxle control system?
- The cost of repairs can vary widely depending on the underlying issue, but it may range from a few hundred dollars for minor fixes to over a thousand dollars for more complex repairs.
8. Can driving with the OBDII code P0702 in a Buick cause any further damage to the vehicle?
- Continuing to drive with this code present can potentially cause additional stress on the transmission components, leading to accelerated wear and increased risk of transmission failure.
9. Is it safe to reset the OBDII code P0702 in a Buick without addressing the underlying issue?
- While resetting the code may temporarily turn off the check engine light, it is not recommended as the underlying issue still exists and may lead to further complications if left unresolved.
10. How long does it typically take to repair the OBDII code P0702 in a Buick's transaxle control system?
- The repair time can vary depending on the specific issue, but it may take anywhere from a few hours to a full day for diagnostics and repairs to be completed by a professional technician.
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