How much does it cost to fix P0740?

Typical repair cost is $200–$1,500.

P0740 — Torque Converter Clutch Circuit Malfunction

High Severity · Transmission

OBD-II code P0740 means your vehicle's ECU detected: Torque Converter Clutch Circuit Malfunction. Below: causes, step-by-step fixes, and repair cost — free, no signup needed.

High severity — do not ignore. Get a diagnosis promptly to avoid further engine damage.

Typical Repair Cost

$200–$1,500

Parts + labor, national average

Severity

High

Address as soon as possible

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Common Causes of P0740

TCC solenoid failure
Low ATF
Wiring issue
Internal transmission damage

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How to Fix Code P0740

Check ATF level and condition

Replace TCC solenoid ($150–$400)

Full transmission service if fluid is burned

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FAQ — Code P0740

What does OBD-II code P0740 mean?

P0740 means your vehicle's onboard computer detected: Torque Converter Clutch Circuit Malfunction. This is a high-severity code in the Transmission category.

How much does it cost to fix code P0740?

Typical repair cost for P0740 is $200–$1,500 including parts and labor. Costs vary by vehicle make, model, and location. A free scan at AutoZone or O'Reilly is a good first step.

Can I drive my car with code P0740?

Code P0740 is high severity. Avoid long drives until diagnosed — continued driving can cause additional engine damage.

What are the most common causes of P0740?

The most common causes are: TCC solenoid failure, Low ATF, Wiring issue, Internal transmission damage. Always start with the cheapest diagnosis step before replacing parts.

Will code P0740 clear itself?

Code P0740 will clear itself after the underlying issue is fixed and the ECU completes several successful drive cycles. Clearing it without fixing the root cause only masks the problem temporarily.

Is P0740 showing on your car?

Enter your VIN for a free vehicle-specific report — recalls, specs, and market value. No signup required.

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Related Transmission Codes

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OBD-II code data is based on SAE J2012 standards and general repair industry data. Repair costs are national averages and vary by vehicle, location, and shop. Always consult a qualified mechanic for a diagnosis specific to your vehicle.