Engine Error
P0740
Torque Converter Clutch Circuit Malfunction
Severity
Medium
Symptoms
Check engine light, decrease in fuel economy, no noticeable lockup at highway speeds
Common Causes
- Defective TCC solenoid
- Wiring harness open or shorted
- Dirty transmission fluid
- Failed torque converter
How to Fix
- 1 Test and replace TCC solenoid
- 2 Repair wiring to transmission
- 3 Perform fluid and filter change
- 4 Replace torque converter
Estimated Repair Cost
USD
$150
–
$1800
TCC Solenoid: $250 - $500; Torque Converter: $1,200 - $1,800