U1426 Code - Implausible TCC Slip Request Signal Received
Quick Answer
The U1426 diagnostic trouble code (DTC) refers to an "Implausible TCC Slip Request Signal Received." This code indicates that the transmission control module (TCM) has detected a discrepancy between the torque converter clutch (TCC) slip request signal and other related signals. Common causes include Faulty TCC solenoid, Wiring or connector issues, Low transmission fluid levels. 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
- U1426 indicates Implausible TCC Slip Request Signal Received.
- Common causes
- Common causes include Faulty TCC solenoid, Wiring or connector issues, Low transmission fluid levels.
- 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.
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Code U1426 Description
The U1426 diagnostic trouble code (DTC) refers to an "Implausible TCC Slip Request Signal Received." This code indicates that the transmission control module (TCM) has detected a discrepancy between the torque converter clutch (TCC) slip request signal and other related signals. The TCC is responsible for locking and unlocking the torque converter, which helps improve fuel efficiency and overall performance. When an implausible signal is received, it can lead to issues with the vehicle's shifting patterns, fuel economy, and overall drivability.
Common Causes of U1426
- Faulty TCC solenoid
- Wiring or connector issues
- Low transmission fluid levels
- Malfunctioning TCM
- Mechanical issues within the transmission
Symptoms of U1426
- Harsh or erratic shifting
- Decreased fuel efficiency
- Transmission slipping
- Engine stalling
- Illuminated check engine light
How to Fix U1426
- Diagnose the issue using a scan tool to identify the specific cause of the code.
- Inspect the TCC solenoid and related wiring for any damage or corrosion.
- Check and top off transmission fluid levels if low.
- Test and potentially replace the TCM if faulty.
- Repair or replace any mechanical components within the transmission as needed.
Cost to Fix U1426
The typical repair costs for addressing an "Implausible TCC Slip Request Signal Received" code can vary depending on the specific cause of the issue. In general, you can expect to pay anywhere from $200 to $800 for parts and labor. Keep in mind that diagnosis time and labor rates at auto repair shops can vary, so it's recommended to obtain quotes from multiple shops in your area for a more accurate estimate.
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Code U1426 Information for Specific Makes
- U1426 Chrysler — Implausible TCC Slip Request Signal Received
- U1426 Dodge — Implausible TCC Slip Request Signal Received
- U1426 Jeep — Implausible TCC Slip Request Signal Received
- U1426 RAM — Implausible TCC Slip Request Signal Received
Frequently Asked Questions about U1426 Code
1. What are common symptoms of OBDII code U1426?
- Common symptoms of OBDII code U1426 include erratic transmission shifts, poor acceleration, and a lit up check engine light.
2. What does the OBDII code U1426 indicate?
- The code U1426 indicates that an implausible Torque Converter Clutch (TCC) Slip Request Signal has been received by the vehicle's powertrain control module.
3. What are possible causes of code U1426?
- Possible causes of code U1426 include faulty TCC solenoid, wiring issues in the TCC circuit, low transmission fluid levels, or a malfunctioning transmission control module.
4. How can I diagnose the cause of OBDII code U1426?
- Diagnosing the cause of code U1426 involves conducting a thorough inspection of the TCC circuit, checking the TCC solenoid for proper operation, and ensuring the transmission fluid levels are adequate.
5. Can I continue driving with OBDII code U1426?
- It is not recommended to continue driving with OBDII code U1426 as it can lead to further damage to the transmission system. It is advisable to address the issue promptly.
6. How can I repair OBDII code U1426?
- Repairing OBDII code U1426 involves fixing the root cause of the issue, which may include replacing a faulty TCC solenoid, repairing wiring issues, or addressing any other underlying transmission problems.
7. Will resetting the OBDII code U1426 make it go away permanently?
- Resetting the code may temporarily turn off the check engine light, but if the underlying issue causing code U1426 is not addressed, the code is likely to reappear.
8. Can a DIY enthusiast fix OBDII code U1426?
- Depending on the level of expertise and access to tools, a DIY enthusiast may be able to fix OBDII code U1426 by following proper diagnostic procedures and repair steps outlined in the vehicle's service manual.
9. Is OBDII code U1426 a common issue in certain vehicle makes or models?
- OBDII code U1426 can be more prevalent in certain vehicle makes and models, particularly those with specific transmission systems that are prone to TCC-related problems.
10. How much does it cost to repair OBDII code U1426 at a professional auto repair shop?
- The cost of repairing OBDII code U1426 at a professional auto repair shop can vary depending on the underlying issue, parts needed for replacement, and labor costs. It is recommended to obtain a detailed quote from a reputable repair facility.
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