[SOLVED] U1401 Code: Fixing Implausible Engine Speed Signal

The automobile fault code U1401 indicates a problem with the Transmission Control Module (TCM) circuit. The most common symptom is the Engine Light ON or Service Engine Soon Warning Light.

The cause of this fault code could be a faulty TCM, an open or shorted TCM harness, or a poor electrical connection. It is important to check for Powertrain Control Module (PCM) codes and visually inspect the related wiring harness and connectors. The repair time for this fault code is 1.0, and the fix involves checking the possible causes listed above and looking for damaged components or corroded connector pins.

Understanding and interpreting fault codes is crucial for diagnosing and repairing automobile issues.

Repair Importance Level10.0 (Out of 10)
Estimated Repair TimeApproximately 1.0 hour
Repair Difficulty Level10.0 (Out of 10)

If you notice the Engine Light ON (or Service Engine Soon Warning Light), it could be a sign of u1401 fault code.

Here are the symptoms to look out for:

  • The automobile fault code U1401 has the following symptoms: Engine Light ON, Service Engine Soon Warning Light ON.

The u1401 automobile fault code can be caused by various factors, including PCM codes, faulty TCM, open or shorted TCM harness, and poor electrical connection.

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  • The automobile fault code u1401 can be caused by several factors.
  • Firstly, it is important to check for any Powertrain Control Module (PCM) codes.
  • Secondly, a faulty Transmission Control Module (TCM) can also be the cause of this fault code.
  • Additionally, an open or shorted Transmission Control Module harness can lead to the u1401 code.
  • Lastly, a poor electrical connection in the Transmission Control Module circuit can also trigger this fault code.

To fix the u1401 automobile fault code, check the possible causes and inspect related wiring harness and connectors for damage.

  • To fix the automobile fault code u1401, first, check the possible causes listed above.
  • Then, visually inspect the related wiring harness and connectors.
  • Look for any damaged components and check for broken, bent, pushed out, or corroded connector’s pins.
  • This fix will take an estimated repair time of 1.0 hour.

The automobile fault code U1401 can be diagnosed and fixed within an estimated repair time of 1.0 hour. The cost of repair is influenced by the hourly rate charged by the auto repair shop, which typically ranges between $75 and $150 per hour.

Therefore, the total cost of diagnosing and fixing the U1401 fault code will depend on the hourly rate charged by the auto repair shop and the estimated repair time required to fix the issue.

The u1401 fault code is related to the Controller Area Network (CAN) BUS.

It monitors the messages transmitted on the CAN BUS and their validity.

The Transmission Control Module (TCM) sets the Diagnostic Trouble Code (DTC) when it detects an incorrect CAN ID from the Powertrain Control Module (PCM). The u1401 code specifically indicates an Implausible Engine Speed Signal Receiv.

What are the possible causes of the u1401 automobile fault code?

If you’re experiencing the u1401 fault code in your automobile, you may notice that the engine light is on or the service engine soon warning light is illuminated. The possible causes of this fault code include a faulty Transmission Control Module (TCM), an open or shorted Transmission Control Module harness, or a poor electrical connection in the Transmission Control Module circuit. To fix this issue, you should check for Powertrain Control Module (PCM) codes and visually inspect the related wiring harness and connectors. Additionally, you should look for damaged components and check for broken, bent, pushed out, or corroded connector’s pins.

How can the Transmission Control Module harness be checked for the u1401 fault code?

If you’re experiencing the u1401 fault code with the engine light on, it’s likely due to a faulty Transmission Control Module (TCM) or an open/shorted TCM harness. To fix this issue, start by checking for Powertrain Control Module (PCM) codes and visually inspecting the related wiring harness and connectors. Look for any damaged components and check for broken, bent, pushed out, or corroded connector pins.

What steps should be taken to visually inspect the wiring harness and connectors for the u1401 fault code?

If you’re experiencing the u1401 fault code, which is indicated by the engine light being on, you should check for Powertrain Control Module (PCM) codes, a faulty Transmission Control Module (TCM), an open or shorted Transmission Control Module harness, or a poor electrical connection in the Transmission Control Module circuit. To fix this issue, visually inspect the related wiring harness and connectors for damaged components, broken, bent, pushed out, or corroded connector’s pins.

u1401 error fault code explained

If your engine light is on and you have a u1401 code, check for PCM codes and inspect the TCM harness and circuit connections for any damage or corrosion.

Look for broken or bent pins and damaged components.

Take action accordingly.

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