What does P1743 mean on a Ford?

P1743. Torque Converter Clutch Solenoid Failed On Conditions (Repeat). Applies to F-150, Explorer, Ranger, Taurus.

What causes P1743 on a Ford?

Persistent TCC apply fault after prior repair Overlooked valve body wear Replacement solenoid also faulty Remaining debris in the converter circuit Wiring short missed on first repair

How do I fix P1743 on a Ford?

Re-test the entire TCC circuit from scratch Flush the converter circuit of debris Re-inspect the valve body bores Verify solenoid part number and operation Confirm lockup releases at stops after repair

Code

P1743

Torque Converter Clutch Solenoid Failed On Conditions (Repeat)

Category: Powertrain - Transmission
Severity: Check Engine Light
Applies to: F-150, Explorer, Ranger, Taurus
Related: P0742 Torque Converter Clutch Circuit Stuck On on OBD Codes List

Findings, check these first

Persistent TCC apply fault after prior repair
Overlooked valve body wear
Replacement solenoid also faulty
Remaining debris in the converter circuit
Wiring short missed on first repair

Standard procedure

Re-test the entire TCC circuit from scratch
Flush the converter circuit of debris
Re-inspect the valve body bores
Verify solenoid part number and operation
Confirm lockup releases at stops after repair

Code lookup

Type a code above, or start from a symptom or a common code.

Press / to jump to the box. Ford-enhanced powertrain, body, chassis and network codes. Generic P0xxx codes live on OBD Codes List.

Sources and review

Review: checked against the recorded source material.

OBDII.pro: P1743 Ford definition
live reference page (obdii.pro)
Supports: Ford-family meaning for P1743: Torque Converter Clutch Solenoid Failied On
Fetched directly. obdii.pro is a publisher independent of the engine-codes family.
P1743 FORD Code: Meaning, Causes, and Symptoms | OBD2 Codes
live reference page (obd2-codes.co)
Supports: Ford meaning for P1743: Torque Converter Clutch Solenoid Failed On Conditions
Fetched directly. obd2-codes.co phrasing matches the engine-codes family, so it counts as one publisher.

Last updated 2026-09-06.

Report a correction for P1743. Include your vehicle, the issue and a source if you have one.