P0742 Hyundai Code - Damper Clutch Circuit Stuck On
Quick Answer
The Torque Converter Clutch (TCC) 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
- P0742 Hyundai indicates Damper Clutch Circuit Stuck On.
- 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 P0742 Hyundai 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 P0742 Hyundai?
- 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 P0742 Hyundai?
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
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P0742 Hyundai 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.
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Frequently Asked Questions about P0742 Hyundai Code
1. What does the OBDII code P0742 mean on a Hyundai?
P0742 indicates that the torque converter clutch (TCC) solenoid is stuck in the "on" position, meaning the damper clutch is not disengaging as it should.
2. What are the common symptoms of a P0742 code in a Hyundai?
Symptoms include stalling at low speeds, poor fuel economy, difficulty shifting gears, transmission overheating, or the Check Engine Light being illuminated.
3. What causes the P0742 code on a Hyundai vehicle?
Possible causes include a faulty torque converter clutch solenoid, dirty or low transmission fluid, damaged wiring or connectors, or internal transmission issues.
4. Can you drive a Hyundai with a P0742 code?
It’s not recommended to drive for long periods with this code, as it can lead to transmission damage or unsafe driving conditions due to stalling.
5. How can I fix the P0742 code on my Hyundai?
Repairs may include replacing the TCC solenoid, flushing and refilling the transmission fluid, repairing wiring or connectors, or addressing internal transmission damage.
6. How do I diagnose the P0742 code on a Hyundai?
Start by checking the transmission fluid level and condition, inspecting wiring and connectors for damage, and testing the torque converter clutch solenoid with a scan tool.
7. Can low transmission fluid cause the P0742 code on a Hyundai?
Yes, low or dirty transmission fluid can disrupt the operation of the torque converter clutch, triggering the P0742 code.
8. How much does it cost to repair the P0742 code on a Hyundai?
Repair costs vary but typically range from $150 to $1,500 depending on whether the issue involves fluid replacement, solenoid repair, or internal transmission work.
9. Will clearing the P0742 code fix the problem on a Hyundai?
Clearing the code will only reset the Check Engine Light temporarily. The underlying issue must be repaired to prevent the code from returning.
10. What happens if I ignore the P0742 code on my Hyundai?
Ignoring the code can lead to further transmission damage, increased repair costs, and potential safety issues due to stalling or poor vehicle performance.
Discuss the causes and fixes for P0742 Hyundai OBDII Code
-
P0742 code for a 07 Hyundai Tucson. Having a hard time putting the gear shift in park and drive. The engine idles very high too. Will changing the Torque converter clutch solenoid valve fix this problem.
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