Check Engine Code
P0740
Torque Converter Clutch Circuit Malfunction
Severity: medium
DIY difficulty: 3/5
Typical cost: $100–$1500
What P0740 means
Umbrella code for TCC circuit issues; often accompanied by P0741, P0742, or P0743.
Symptoms
- CEL
- Shudder on cruise
- Fuel economy drop
Likely causes (most common first)
- Low fluid
- Failed TCC solenoid
- Wiring issue
Can I keep driving?
Medium — drivable but fix soon
Typical repair cost
DIY fixes can start near $100 (parts only). Shop repairs for P0740 typically run up to $1500 depending on the underlying cause and vehicle. Start with the most common cause — Low fluid — before throwing parts at it.
Recommended parts & tools for P0740
Our buyer’s guides cover the tools and parts that pair with AXLY:
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Related codes
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