P2738 Buick Code - Transmission Control Solenoid Valve 6 Control Circuit Low Voltage
Quick Answer
The Transmission Control Solenoid Valve Solenoid Valve is an electronic pressure regulator that controls transmission line pressure based on current flow through its coil windings. Common causes include Low transmission fluid level, Dirty transmission fluid, Faulty Transmission Control Solenoid Valve. 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
- P2738 Buick indicates Transmission Control Solenoid Valve 6 Control Circuit Low Voltage.
- Common causes
- Common causes include Low transmission fluid level, Dirty transmission fluid, Faulty Transmission Control Solenoid Valve.
- 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 P2738 Buick Description
What are the Possible Causes of the DTC P2738 Buick?
- Low transmission fluid level
- Dirty transmission fluid
- Faulty Transmission Control Solenoid Valve
- Transmission Control Solenoid Valve harness is open or shorted
- Transmission Control Solenoid Valve circuit poor electrical connection
- Faulty Transmission Control Module (TCM)
How to Fix the DTC P2738 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 P2738 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 P2738 Buick code?
Need more information on how to fix the P2738 Buick code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P2738 Buick code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about P2738 Buick Code
What does OBDII code P2738 mean on a Buick?
Code P2738 indicates "Transmission Control Solenoid Valve 6 Control Circuit Low Voltage," meaning there’s an electrical issue affecting the solenoid responsible for controlling hydraulic pressure in the transmission.
What are the common symptoms of code P2738 in a Buick?
Symptoms may include harsh or delayed shifting, transmission slipping, poor acceleration, or the transmission being stuck in one gear.
What causes code P2738 on a Buick?
Common causes include a faulty transmission control solenoid, damaged wiring or connectors in the solenoid circuit, low transmission fluid, or issues with the transmission control module (TCM).
Can low transmission fluid cause code P2738?
Yes, low or contaminated transmission fluid can lead to improper solenoid function and trigger this code.
How can I diagnose code P2738 on my Buick?
Diagnosis involves inspecting the solenoid wiring and connectors for damage, testing the solenoid for proper operation, checking transmission fluid levels, and scanning for related transmission codes.
Is code P2738 serious, and can I still drive my Buick?
This code can lead to shifting issues that may damage the transmission over time. It’s best to address the issue promptly and avoid extended driving.
How do I fix code P2738 on a Buick?
Fixes may include replacing the faulty solenoid, repairing damaged wiring, cleaning connectors, refilling or flushing the transmission fluid, or reprogramming the TCM.
How much does it cost to repair code P2738 on a Buick?
Repair costs vary but typically range from $150 to $500, depending on whether the solenoid needs replacement or wiring repairs are involved.
Can code P2738 reset itself after repairs?
Yes, after resolving the issue, the code may clear itself, but it’s recommended to use an OBDII scanner to ensure it’s properly erased.
What tools do I need to troubleshoot code P2738?
You’ll need an OBDII scanner, a multimeter to test electrical components, basic hand tools, and possibly a transmission fluid dipstick or tester.
Discuss the causes and fixes for P2738 Buick OBDII Code
Code P2738 Buick comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
