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Engine-Codes – Chrysler – P0742 Chrysler

P0742 Chrysler Code - Torque Converter Clutch Stuck On

Quick Answer

When the P0742 code appears in a Chrysler vehicle, it indicates that the torque converter clutch is stuck in the "on" position. Common causes include Faulty torque converter clutch solenoid, Low transmission fluid levels, Wiring issues in the transmission control circuit. 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 Chrysler indicates Torque Converter Clutch Stuck On.
Common causes
Common causes include Faulty torque converter clutch solenoid, Low transmission fluid levels, Wiring issues in the transmission control circuit.
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.
What is this?
Table of contents Created and updated by William Orellana on Aug 30, 2024
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Code P0742 Chrysler Description

When the P0742 code appears in a Chrysler vehicle, it indicates that the torque converter clutch is stuck in the "on" position. The torque converter is a crucial component in an automatic transmission, responsible for transferring power from the engine to the transmission. The torque converter clutch is designed to engage and disengage at specific times to improve fuel efficiency and reduce slippage. However, when the clutch is stuck in the engaged position, it can lead to various performance issues and potential damage to the transmission.

OBDII Code P0742 Chrysler - Torque Converter Clutch Stuck On
P0742 Chrysler Code - Torque Converter Clutch Stuck On

Common Causes of P0742 Chrysler

  1. Faulty torque converter clutch solenoid
  2. Low transmission fluid levels
  3. Wiring issues in the transmission control circuit
  4. Mechanical damage to the torque converter
  5. Malfunctioning transmission control module

Symptoms of P0742 Chrysler

  1. Decreased fuel efficiency
  2. Engine stalling at idle
  3. Difficulty shifting gears
  4. Transmission overheating
  5. Illumination of the check engine light

How to Fix P0742 Chrysler

  1. Begin by diagnosing the specific cause of the issue using a scan tool to read the trouble codes and performing a visual inspection of the transmission components.
  2. Check and replenish transmission fluid levels if low, and inspect for any leaks or contamination.
  3. Test and replace the torque converter clutch solenoid if found to be faulty.
  4. Inspect the wiring in the transmission control circuit for any damage or loose connections, repairing or replacing as necessary.
  5. If mechanical damage is detected in the torque converter, it may need to be replaced entirely.

Cost to Fix P0742 Chrysler

The cost of repairing a P0742 code in a Chrysler vehicle can vary depending on the specific cause of the issue and the extent of the repairs needed. In general, the parts required for this repair, such as a torque converter clutch solenoid or a new torque converter, can range from $150 to $600. Labor costs can add an additional $200 to $500, depending on the shop's hourly rates and the complexity of the repair. Overall, the total cost of addressing a P0742 code in a Chrysler vehicle could range from $350 to $1100. It's recommended to obtain quotes from local auto repair shops to get a more accurate estimate based on your vehicle's make and model.

What does this mean?

Tech Notes for P0742 Chrysler

When the a transmission solenoid is stuck on, in most cases the problem is not the electrical part of the solenoid; the problem is foreign material obstructing the mechanical function of the solenoid or the flow of the fluid through the transmission valve body. If the transmission fluid is very dirty, it is recommend changing the transmission fluid and if possible removing the transmission pan for further diagnosis. Excessive debris or metal particles on the transmission pan could be an indication that there is a transmission mechanical failure and that the transmission will need to be rebuilt or replaced.

When is the Code Detected?

The Transmission Control Module (TCM) has detected slippage on the Torque Converter Clutch (TCC) during a period when the converter is commanded off

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

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