P0745 — Torque Converter Clutch Circuit Intermittent
Drive with caution — fix soon.
What P0745 means
This code means the computer detected an on-and-off (intermittent) problem in the torque converter clutch circuit, which controls when the converter locks up. It's commonly caused by loose or corroded connectors, chafed wiring, or a failing solenoid that only acts up occasionally. Because it's intermittent, diagnosis focuses on the wiring and connections, and it's often fixable without major transmission work.
Common symptoms
- Check engine light is on (sometimes intermittently)
- Occasional shuddering at cruising speed
- Slightly reduced fuel economy
- Transmission runs warmer than usual
- Inconsistent or fluctuating engine RPM on the highway
Common causes
- Loose or corroded electrical connector
- Chafed or intermittently broken wiring
- Faulty torque converter clutch solenoid
- Failing transmission control module
- Worn torque converter clutch
Typical repair cost
$150 – $900
Varies by vehicle and root cause.
Frequently asked questions
Can I keep driving with a P0745 code?
Usually yes, since the fault is intermittent and mainly affects efficiency and smoothness. Still, the transmission can run hotter, so have it checked before it worsens.
How much does it cost to fix a P0745 code?
Wiring or connector repairs and a solenoid replacement typically run $150 to $900. If the torque converter needs replacing, expect higher costs after a full diagnosis.
Is a P0745 code serious?
It's generally moderate. It won't leave you stranded right away, but the intermittent fault and extra heat can lead to bigger transmission issues if left unaddressed.
Why is a P0745 code intermittent?
Intermittent faults usually come from loose or corroded connections or wiring that only breaks contact under certain conditions, which is why the symptoms and light can come and go.