P1740moderate severityPowertrain
Torque Converter Clutch Inductive Signature Malfunction
on 2021 Ford Mustang Mach-E Standard Range Dual Motor AWD · RWD
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
- Check for additional transmission DTCs in TCM
- Test TCC solenoid resistance
- Inspect TCC solenoid wiring
- Check transmission fluid level and condition
Repair notes
Check for companion DTCs. Replace TCC solenoid if faulty. Service transmission fluid.
Other Powertrain codes on this vehicle
P0070
Ambient Air Temperature Sensor Circuit
P0071
Ambient Air Temperature Sensor Range/Performance
P0072
Ambient Air Temperature Sensor Circuit Low
P0073
Ambient Air Temperature Sensor Circuit High
P0115
Engine Coolant Temperature (ECT) Sensor 1 Circuit
P0116
ECT Sensor 1 Circuit Range/Performance
P0117
ECT Sensor 1 Circuit Low Input
P0118
ECT Sensor 1 Circuit High Input
P0119
ECT Sensor 1 Circuit Intermittent
P0125
Insufficient Coolant Temperature for Closed Loop Fuel Control