Torque Converter Clutch Solenoid A Control Circuit
There's a problem with the torque converter clutch solenoid A circuit.
Heads up: this code wasn't in our hand-written library yet, so DiagCoach AI built this page on the fly. Double-check critical specs against service info before condemning parts.
What it means (plain English)
The computer is telling you it can't control the torque converter clutch solenoid A, which clicks on and off to lock the torque converter and save fuel.
What the computer is actually seeing
The control unit expects a specific voltage or resistance from the solenoid circuit. If it's out of specs (usually below 5 volts or above 15 ohms resistance), it sets this code.
What a healthy reading looks like
Voltage should be around battery level (12-14.5 volts) when the solenoid is energized, and resistance should be between 10-20 ohms when it's off.
Guided diagnostic — the DiagCoach way
Don't just throw parts at it. Walk through these in order — each step tells you whether to keep going or stop and fix what you found.
- 11. Check the transmission fluid level and condition. Ensure it is within specs and not burnt.
- 22. Inspect the wiring and connectors to the torque converter clutch solenoid for damage or corrosion. Fix as needed.
- 33. Use a multimeter to check voltage at the solenoid connector. Should be 12-14.5 volts with key on, engine off.
- 44. Measure resistance of the solenoid. If it reads outside the 10-20 ohm range, replace the solenoid.
- 55. If wiring and solenoid check out, suspect PCM (Powertrain Control Module) issues.
Common causes
- Faulty torque converter clutch solenoid
- Wiring issue or bad connector in the solenoid circuit
- Transmission fluid issues (dirty or low fluid)
Typical repair cost
$$
Related codes
Frequently asked questions
Is it safe to drive with this code?
Moderate severity means you can drive it, but it's better to fix soon to avoid transmission damage.
Will the code come back after I clear it?
If the issue isn't fixed, yes, it'll return once the conditions for setting the code are met.
Could this be related to other transmission issues?
Yes, especially if you notice gear slipping or unusual shifting behavior.
Working a real vehicle right now?
Let DiagCoach walk you through it live with your specific symptoms, vehicle, and what you've already checked.
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