Back to 2021 Ford Mustang Mach-E
Help
2021 FORD MUSTANG MACH-E
Extended Range Dual Motor AWD•AWD•AUTOMATIC•ev
6 active safety recalls on this vehicle — view recalls
Founding sponsor spot is openYour name on every procedure for this vehicle, permanently.Sponsor — $99 →
Repairs0Labor332Torque3886Fluid5DTC581Battery1Maintenance0Recalls6
P1740moderate severityPowertrain

Torque Converter Clutch Inductive Signature Malfunction

on 2021 Ford Mustang Mach-E Extended Range Dual Motor AWD · AWD

What this code means

The TCC solenoid did not move when the PCM commanded it. This is an information code — there should be a more specific code stored in the Transmission Control Module. The TCC solenoid circuit performance is not as expected.

Symptoms

  • Check Engine Light
  • TCC not engaging
  • Reduced fuel economy on highway
  • Transmission overheating at highway speeds

Common causes

  • Faulty TCC solenoid
  • Wiring issue to TCC solenoid
  • Low transmission fluid
  • Internal transmission blockage
  • Contaminated transmission fluid

Diagnostic steps

  1. Check for additional transmission DTCs in TCM
  2. Test TCC solenoid resistance
  3. Inspect TCC solenoid wiring
  4. Check transmission fluid level and condition

Repair notes

Check for companion DTCs. Replace TCC solenoid if faulty. Service transmission fluid.

🔌 Don't have a code reader?
Any of these will read and clear this code — pick by how deep you want to go.
As an Amazon Associate, OLP earns from qualifying purchases — how we link. This never changes the specs we publish.

Other Powertrain codes on this vehicle

🔌 Need this data in your app? It's all in the free API →
🔧 Database maintained under the daily editorial review of Chris Hackleman · Master Technician · 20+ years and Jeff Moore · Master Lexus & Toyota Mechanic · 20+ years. Spot an error? Use the Help link above — a human reads every report.
Stuck on this repair? Take it to The Diag Desk — ask a master tech about this exact car → real human answer within 24h, never AI
Share:XRedditFBWhatsAppThreadsEmail
⚠ STILL BEHIND THE PAYWALL
The 2021 Ford Mustang Mach-E repair data is incomplete because no one has sponsored it yet. For $99, we generate the full step-by-step procedures, then fact-check them with a second AI pass and your expert review. Your name on every procedure, permanently.
The same data would cost $169/mo from Mitchell1 or $30/year from ALLDATAdiy — and you'd be renting access, not freeing it. Sponsor once, free forever.
Sponsor the Ford Mustang Mach-E — $99 →
Building an app?
Free API access to all this data — 20 requests/day, no card required.
Get an API key →
Run a shop?
Manage repairs, estimates, and customers with ShopBase — $249/mo, all features included.
Try ShopBase →