P1744 Mercury Code - Torque Converter Clutch System Stuck in Off Position
Quick Answer
The torque converter clutch solenoid valve is activated, with the gear in D4, by the Transmission Control Module (TCM) in response to signals sent from the vehicle speed and the Engine Control Module (ECM). Common causes include Low transmission fluid level, Dirty transmission fluid, Faulty torque converter clutch solenoid valve. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- P1744 Mercury indicates Torque Converter Clutch System Stuck in Off Position.
- Common causes
- Common causes include Low transmission fluid level, Dirty transmission fluid, Faulty torque converter clutch solenoid valve.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
Code P1744 Mercury Description
Lock-up operation, however, is prohibited when A/T fluid temperature is too low.
When the accelerator pedal is depressed (less than 2/8) in lock-up condition, the engine speed should not change abruptly. If there is a big jump in engine speed, there is no lock-up.
What are the Possible Causes of the DTC P1744 Mercury?
- Low transmission fluid level
- Dirty transmission fluid
- Faulty torque converter clutch solenoid valve
- Torque converter clutch solenoid valve harness or connectors
- Torque converter clutch solenoid valve circuit is open or shorted
- Transmission internal mechanical problem
How to Fix the DTC P1744 Mercury?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
Code Tech Notes
1996-2003 Mercury Sable Factory Service Bulletin OBDII Code P1744
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P1744 Mercury code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
Need more information about the P1744 Mercury code?
Need more information on how to fix the P1744 Mercury code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P1744 Mercury code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about P1744 Mercury Code
1. What does OBDII code P1744 mean for Mercury vehicles?
P1744 indicates that the Torque Converter Clutch (TCC) system is stuck in the "Off" position, meaning the clutch is not engaging properly.
2. What are common symptoms of P1744 on a Mercury vehicle?
Symptoms include poor fuel efficiency, transmission overheating, slipping gears, shuddering at higher speeds, and a check engine light.
3. What causes the P1744 code in a Mercury vehicle?
Common causes include a faulty torque converter, damaged TCC solenoid, low or dirty transmission fluid, or internal transmission issues.
4. How can I fix the P1744 code on my Mercury vehicle?
Repairs may include replacing the TCC solenoid, flushing and refilling transmission fluid, repairing wiring issues, or rebuilding the torque converter.
5. Can driving with the P1744 code damage my Mercury vehicle?
Yes, prolonged driving with this code can lead to transmission damage or overheating, which may result in costly repairs.
6. How do I diagnose the P1744 code on my Mercury vehicle?
Diagnosis involves scanning for codes, inspecting transmission fluid condition, testing the TCC solenoid, and checking for wiring or connector issues.
7. Is low transmission fluid a possible cause of the P1744 code?
Yes, low or contaminated transmission fluid can prevent proper operation of the torque converter clutch system.
8. What does the torque converter clutch do in a Mercury vehicle?
The torque converter clutch improves fuel efficiency by creating a direct connection between the engine and transmission at higher speeds.
9. How much does it cost to repair the P1744 code on a Mercury vehicle?
Repair costs vary widely, ranging from $150 for a solenoid replacement to over $1,000 for a torque converter rebuild.
10. Can a faulty TCC solenoid trigger the P1744 code on a Mercury vehicle?
Yes, a malfunctioning TCC solenoid can prevent the clutch from engaging, causing the P1744 code to appear.
Discuss the causes and fixes for P1744 Mercury OBDII Code
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
