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U1420 Dodge Code - Implausible Electronic Gear Select Signal Received

Quick Answer

The U1420 code for Dodge vehicles indicates that an implausible electronic gear select signal has been received by the vehicle's onboard computer system. Common causes include Faulty transmission control module, Wiring or connection issues in the transmission system, Malfunctioning gear selector switch. 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
U1420 Dodge indicates Implausible Electronic Gear Select Signal Received.
Common causes
Common causes include Faulty transmission control module, Wiring or connection issues in the transmission system, Malfunctioning gear selector switch.
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 Sep 17, 2024
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Code U1420 Dodge Description

The U1420 code for Dodge vehicles indicates that an implausible electronic gear select signal has been received by the vehicle's onboard computer system. This means that there is a discrepancy between the gear selected by the driver and the signal being sent to the transmission control module. This issue can have a significant impact on the vehicle's performance and safety.

OBDII Code U1420 Dodge - Implausible Electronic Gear Select Signal Received
U1420 Dodge Code - Implausible Electronic Gear Select Signal Received

Common Causes of U1420 Dodge

  1. Faulty transmission control module
  2. Wiring or connection issues in the transmission system
  3. Malfunctioning gear selector switch
  4. Software glitches in the vehicle's onboard computer system
  5. Electrical interference or signal disruption

Symptoms of U1420 Dodge

  1. Erratic shifting behavior
  2. Hesitation or delay when changing gears
  3. Inability to shift gears
  4. Reduced acceleration
  5. Poor fuel efficiency

How to Fix U1420 Dodge

  1. Begin by conducting a thorough diagnostic scan to confirm the U1420 code and identify the specific cause of the issue.
  2. Inspect the wiring and connections in the transmission system for any signs of damage or corrosion. Repair or replace any faulty components as needed.
  3. Test the gear selector switch to ensure it is functioning properly. Replace the switch if necessary.
  4. Check the transmission control module for any faults or malfunctions. Repair or replace the module as required.
  5. Clear the code from the vehicle's computer system and test drive the vehicle to ensure that the issue has been resolved.

Cost to Fix U1420 Dodge

The cost of repairing the U1420 code on a Dodge vehicle can vary depending on the specific cause of the issue and the extent of the repairs needed. In general, the cost of parts and labor for this type of repair can range from $200 to $800 or more. It is important to note that diagnostic time and labor rates at auto repair shops can vary, so it is advisable to check with local shops for a more accurate estimate. Keep in mind that rates may be higher at dealerships or in metropolitan areas, while independent shops may offer more competitive pricing.

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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.

Frequently Asked Questions about U1420 Dodge Code

1. What are common symptoms of the U1420 OBDII code in a Dodge vehicle?

- Common symptoms include issues with shifting gears, transmission not engaging properly, warning lights on the dashboard, and reduced vehicle performance.

2. What does the U1420 code "Implausible Electronic Gear Select Signal Received" mean in a Dodge?

- This code indicates that the transmission control module has detected an implausible electronic gear select signal, which can affect the proper operation of the transmission.

3. What are potential causes of the U1420 code in a Dodge?

- Possible causes include faulty gear selector switch, damaged wiring or connectors, issues with the transmission control module, or a malfunction in the transmission itself.

4. How can I diagnose the U1420 code in my Dodge?

- Diagnosing the U1420 code typically involves using a diagnostic scanner to retrieve the code, checking the gear selector switch, inspecting the wiring and connectors for damage, and testing the transmission control module.

5. Can I continue driving my Dodge with the U1420 code present?

- It is not recommended to continue driving with the U1420 code present, as it can lead to further transmission issues and potential safety hazards. It is best to address the problem promptly.

6. How can I repair the U1420 code in my Dodge?

- Repairing the U1420 code may involve replacing the gear selector switch, repairing damaged wiring or connectors, resetting the transmission control module, or addressing any underlying transmission issues.

7. Will resetting the fault codes clear the U1420 code in my Dodge?

- Resetting the fault codes may temporarily clear the U1420 code, but if the underlying issue is not addressed, the code is likely to return. It is recommended to diagnose and repair the root cause of the problem.

8. Can a DIY enthusiast fix the U1420 code in a Dodge?

- While some aspects of diagnosing and repairing the U1420 code may be possible for DIY enthusiasts, dealing with transmission-related issues can be complex. It is advisable to seek professional help for proper diagnosis and repair.

9. How much does it cost to fix the U1420 code in a Dodge?

- The cost of fixing the U1420 code can vary depending on the root cause of the issue, parts needed for repair, and labor costs. It is recommended to get a diagnostic inspection to determine the exact cost.

10. Is the U1420 code a common issue in Dodge vehicles?

- The U1420 code "Implausible Electronic Gear Select Signal Received" is not uncommon in Dodge vehicles, especially in models with electronic gear selectors. Regular maintenance and timely repairs can help prevent this issue.

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