U145D 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 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 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?
- 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?
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 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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Information for Specific Makes
- U145D Chrysler — Implausible Data Received From TCM On D-PT
- U145D Dodge — Implausible Data Received From TCM On D-PT
- U145D Jeep — Implausible Data Received From TCM On D-PT
- U145D RAM — Implausible Data Received From TCM On D-PT
Frequently Asked Questions about U145D Code
1. What does the OBDII code U145D mean?
U145D indicates "Implausible Data Received From TCM On D-PT," meaning the transmission control module (TCM) has transmitted data that the powertrain control module (PCM) considers invalid or inconsistent.
2. What are common symptoms of the U145D code?
Symptoms may include a check engine light, erratic transmission shifting, poor acceleration, or a vehicle stuck in limp mode.
3. What causes the U145D code to appear?
Common causes include a faulty TCM, wiring or connection issues between the TCM and PCM, or corrupted or outdated software in one of the modules.
4. Can driving with the U145D code cause further damage?
Yes, driving with this code can lead to further damage to the transmission or engine components if the issue is not resolved promptly.
5. How do you diagnose the U145D code?
Diagnosing involves scanning with an OBDII tool, inspecting wiring and connections between the TCM and PCM, and checking for software updates or faults in the TCM.
6. Can a faulty TCM cause the U145D code?
Yes, a faulty TCM is one of the primary causes of this code, as it may send corrupted or implausible data to the PCM.
7. How can the U145D code be fixed?
Repairs may include updating or reprogramming the TCM, repairing damaged wiring or connectors, or replacing the TCM if it’s faulty.
8. Will clearing the code fix the U145D issue?
Clearing the code may temporarily remove the warning, but the underlying issue must be fixed to prevent the code from returning.
9. Does the U145D code always mean a hardware failure?
No, it can also be caused by software-related issues, such as outdated module firmware or corrupted communication data.
10. How much does it cost to repair the U145D code?
Repair costs vary based on the root cause, ranging from $100 for wiring repairs to $1,000 or more for TCM replacement and reprogramming.
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