P0740
Torque Converter Clutch Circuit/Open
P0740 is an OBD-II diagnostic trouble code meaning: Torque Converter Clutch Circuit/Open. Common causes: broken or damaged control circuit wiring, engine blocking solenoid malfunction. Estimated repair cost: $17–89.
Symptoms
- Increased fuel consumption
- Gear shifting problems
- Vibration when driving
- Check Engine Light Illuminates
- Reduced acceleration dynamics
Causes
- Broken or damaged control circuit wiring
- Engine blocking solenoid malfunction
- Low transmission fluid level
- Mechanical damage to the torque converter
- Problems with the transmission control unit
How to Fix
- Check the level and condition of the transmission fluid
- Inspect the wiring harness for damage
- Check the resistance of the gas turbine engine blocking solenoid
- Scan the transmission control module for additional codes
- If necessary, replace the solenoid or torque converter
Related codes
Error P0740 by Vehicle Brand
FAQ
What does the P0740 code mean?
P0740 is an OBD-II diagnostic trouble code that indicates: Torque Converter Clutch Circuit/Open
What causes a P0740 error code?
The most common causes of P0740 include: Broken or damaged control circuit wiring; Engine blocking solenoid malfunction; Low transmission fluid level; Mechanical damage to the torque converter.
How do I fix a P0740 diagnostic trouble code?
To fix P0740: Check the level and condition of the transmission fluid. Inspect the wiring harness for damage. Check the resistance of the gas turbine engine blocking solenoid. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P0740?
Yes, but get it checked soon
How much does it cost to fix P0740?
The estimated repair cost for P0740 is $17–89. Actual cost depends on your vehicle, location, and labor rates.
See also: Russian version · NationStat