U1440 RAM Code - Implausible/Missing Programmed Transfer Case Hi Ratio
Quick Answer
This programmed Transfer Case Hi Ratio information is received from the Totally Integrated Power Module (TIPM) to be used by the Transmission Control Module (TCM) as part of speed sensor diagnostics. Common causes include Faulty Transmission Control Module (TCM), Transmission Control Module (TCM) harness is open or shorted, Transmission Control Module (TCM) circuit poor electrical connection. 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
- U1440 RAM indicates Implausible/Missing Programmed Transfer Case Hi Ratio.
- Common causes
- Common causes include Faulty Transmission Control Module (TCM), Transmission Control Module (TCM) harness is open or shorted, Transmission Control Module (TCM) circuit poor electrical connection.
- 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 U1440 RAM Description
What are the Possible Causes of the DTC U1440 RAM?
- Faulty Transmission Control Module (TCM)
- Transmission Control Module (TCM) harness is open or shorted
- Transmission Control Module (TCM) circuit poor electrical connection
- Faulty Totally Integrated Power Module (TIPM)
How to Fix the DTC U1440 RAM?
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.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the U1440 RAM 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 U1440 RAM Code
1. What are the common symptoms of OBDII code U1440 RAM?
- The common symptoms of OBDII code U1440 RAM include the "Service 4WD" light illuminated on the dashboard, issues with shifting gears, and a noticeable decrease in overall vehicle performance.
2. What does the OBDII code U1440 RAM "Implausible/Missing Programmed Transfer Case Hi Ratio" mean?
- The code U1440 RAM indicates that there is an issue related to the transfer case high ratio within the vehicle's 4WD system, either due to a malfunction or missing programmed data.
3. What are the potential causes of OBDII code U1440 RAM?
- The potential causes of code U1440 RAM include a faulty transfer case shift motor, damaged transfer case control module, wiring issues, or a software glitch in the vehicle's system.
4. How can I diagnose the OBDII code U1440 RAM?
- Diagnosing code U1440 RAM typically involves using a professional OBDII scanner to retrieve the code, inspecting the transfer case components for any visible damage, and conducting a thorough electrical system check.
5. Can I continue driving with OBDII code U1440 RAM active?
- It is not recommended to drive with the U1440 RAM code active, as it can lead to potential safety hazards and further damage to the vehicle's transfer case system.
6. How can I repair OBDII code U1440 RAM?
- Repairing code U1440 RAM may involve replacing the transfer case shift motor, repairing any damaged wiring, reprogramming the transfer case control module, or resetting the system to clear the code.
7. Is OBDII code U1440 RAM a common issue in RAM vehicles?
- OBDII code U1440 RAM is a relatively common issue in RAM vehicles, particularly in models equipped with a 4WD system, and it often requires professional diagnosis and repair.
8. Can OBDII code U1440 RAM be fixed at home, or should I seek professional help?
- While some basic troubleshooting can be done at home, resolving OBDII code U1440 RAM often requires specialized tools and expertise, making it advisable to seek professional help for accurate diagnosis and repair.
9. How much does it typically cost to repair OBDII code U1440 RAM?
- The cost to repair OBDII code U1440 RAM can vary depending on the specific cause of the issue, the extent of the damage, and whether any parts need to be replaced. Repair costs may range from a few hundred to over a thousand dollars.
10. How can I prevent OBDII code U1440 RAM from recurring in the future?
- To prevent code U1440 RAM from recurring, it is important to perform regular maintenance on the vehicle's transfer case system, address any issues promptly, and follow the manufacturer's recommended service schedule.
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