U145D RAM Code - Implausible Data Received From TCM On D-PT
Quick Answer
Sensor information and other calculated data that is processed by an Electronic Control Module (ECU) can be transmitted over the Controller Area Network (CAN). Common causes include Faulty Transmission Control Module (TCM), Transmission Control Module harness is open or shorted, Transmission Control Module 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
- U145D RAM indicates Implausible Data Received From TCM On D-PT.
- Common causes
- Common causes include Faulty Transmission Control Module (TCM), Transmission Control Module harness is open or shorted, Transmission Control Module 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 U145D RAM Description
If the transmitting ECU knows that the data is not valid, it will transmit a CAN message indicating that the information is not valid or not available. Often, this message is known as a Signal Not Available (SNA) message.
When a SNA message is transmitted, a Diagnostic Trouble Code (DTC) will be set in the receiving ECU.
If a SNA message is received, this indicates that the transmitting ECU cannot transmit good data relative to the information that it was supposed to send. Typically, the transmitting ECU will also have a DTC set related to that information. Therefore, in most cases, this DTC is considered informational because the error is related to another ECU.
The DTC will set if the ESM detects an invalid Controller Area Network (CAN) BUS signal from the TCM.
What are the Possible Causes of the DTC U145D RAM?
- Faulty Transmission Control Module (TCM)
- Transmission Control Module harness is open or shorted
- Transmission Control Module circuit poor electrical connection
How to Fix the DTC U145D 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 U145D 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 U145D RAM Code
1. What are the common symptoms of OBDII code U145D RAM?
The common symptoms of code U145D RAM include erratic shifting behavior, transmission slipping, and the vehicle going into limp mode.
2. What could cause the OBDII code U145D RAM to appear?
The code U145D RAM is typically triggered by communication issues between the transmission control module (TCM) and the powertrain control module (PCM).
3. How serious is the OBDII code U145D RAM?
The code U145D RAM should be addressed promptly as it can lead to potential transmission issues and affect the overall performance of the vehicle.
4. What are some possible repair tips for OBDII code U145D RAM?
Some repair tips for code U145D RAM include checking and repairing any damaged wiring, ensuring proper connection between the TCM and PCM, and updating the software of the control modules.
5. Can OBDII code U145D RAM be fixed without professional help?
While some basic checks and repairs can be done without professional help, diagnosing and repairing the underlying communication issues may require the expertise of a trained mechanic.
6. How can I prevent OBDII code U145D RAM from reoccurring?
Regular maintenance, checking for loose connections, and ensuring proper communication between the TCM and PCM can help prevent the reoccurrence of code U145D RAM.
7. Is it safe to continue driving with the OBDII code U145D RAM present?
It is not recommended to continue driving with the code U145D RAM present, as it can lead to further transmission problems and potentially jeopardize the safety of the vehicle.
8. How can I diagnose OBDII code U145D RAM?
Diagnosing code U145D RAM involves using a diagnostic scanner to retrieve the code, checking for any related codes, and performing a thorough inspection of the TCM and PCM communication systems.
9. Are there any recalls related to OBDII code U145D RAM?
Recalls related to code U145D RAM may vary depending on the vehicle make and model. It is advisable to check with the manufacturer or a dealership for any relevant recalls.
10. Can a low battery voltage cause OBDII code U145D RAM to appear?
Yes, low battery voltage can potentially cause communication issues between the TCM and PCM, triggering code U145D RAM. It is important to ensure the battery is in good condition and properly charged.
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