U1420 RAM Code - Implausible Electronic Gear Select Signal Received
Quick Answer
The U1420 code indicates that an implausible electronic gear select signal has been received by the vehicle's on-board computer system. Common causes include Faulty gear select switch, Wiring issues or shorts in the gear select circuit, Faulty transmission control module. 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 RAM indicates Implausible Electronic Gear Select Signal Received.
- Common causes
- Common causes include Faulty gear select switch, Wiring issues or shorts in the gear select circuit, Faulty transmission control module.
- 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 U1420 RAM Description
The U1420 code indicates that an implausible electronic gear select signal has been received by the vehicle's on-board computer system. This means that there is a discrepancy between the gear selected by the driver and the signal being transmitted to the transmission control module. This can lead to issues with the vehicle's shifting patterns, potentially causing erratic behavior or difficulty in selecting gears. If left unresolved, this issue can result in further damage to the transmission system and other related components.
Common Causes of U1420 RAM
- Faulty gear select switch
- Wiring issues or shorts in the gear select circuit
- Faulty transmission control module
- Software glitches in the vehicle's computer system
- Mechanical issues within the transmission itself
Symptoms of U1420 RAM
- Erratic shifting patterns
- Difficulty selecting gears
- Transmission slipping
- Harsh or delayed shifting
- Illuminated warning light on the dashboard
How to Fix U1420 RAM
- Diagnose the issue using a scan tool to pinpoint the exact cause of the problem.
- Inspect the gear select switch and wiring for any visible damage or corrosion.
- Test the transmission control module for proper functioning and reprogram if necessary.
- Repair or replace any faulty components identified during the diagnostic process.
- Clear the fault code from the system and test drive the vehicle to ensure the issue has been resolved.
Cost to Fix U1420 RAM
The typical repair costs for addressing the U1420 code can vary depending on the specific cause of the issue. In general, parts such as a new gear select switch or transmission control module can range from $100 to $500, while labor costs can add an additional $100 to $300. Overall, the total repair cost for this issue can range from $200 to $800. However, it's important to note that actual costs may vary based on the location, vehicle make and model, and labor rates of the repair shop. It's recommended to obtain quotes from multiple shops to compare prices and ensure a fair deal.
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Frequently Asked Questions about U1420 RAM Code
1. What are the common symptoms of OBDII code U1420 RAM?
- Common symptoms include issues with shifting gears, the transmission not engaging properly, and the transmission staying in one gear.
2. What could cause the OBDII code U1420 RAM to appear?
- The code may appear due to a faulty gear selector switch, wiring issues, a malfunctioning transmission control module (TCM), or a bad connection between components.
3. How can I diagnose the cause of the U1420 RAM code?
- Diagnosis typically involves checking the gear selector switch, inspecting the wiring for any damage, testing the TCM for proper function, and verifying connections between components.
4. Can I continue driving my vehicle with the U1420 RAM code present?
- It is not recommended to continue driving with the code present, as it can lead to further transmission issues and potential safety hazards. It's best to address the problem promptly.
5. What are some repair tips for fixing the U1420 RAM code?
- Repair tips include checking and repairing any damaged wiring, replacing the gear selector switch if faulty, reprogramming the TCM if needed, and ensuring all connections are secure.
6. Is the U1420 RAM code a serious issue?
- Yes, the U1420 RAM code is considered a serious issue as it can affect the proper functioning of the transmission, leading to potential safety risks and further damage if not addressed promptly.
7. How long does it typically take to repair the U1420 RAM code?
- The repair time can vary depending on the exact cause of the code, but it may take a few hours to a full day to diagnose and fix the issue properly.
8. Can I reset the U1420 RAM code myself?
- While you can clear the code with an OBDII scanner, it is important to address the underlying issue causing the code to prevent it from reoccurring.
9. Will the U1420 RAM code cause my vehicle to go into "limp mode"?
- In some cases, the U1420 RAM code can trigger the vehicle to go into "limp mode," limiting the transmission's functionality to prevent further damage.
10. How much does it cost to repair the U1420 RAM code?
- The cost of repairing the U1420 RAM code can vary depending on the extent of the issue, the necessary repairs or replacements, and labor costs at the service provider.
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