Engine-Codes - Ram - U1412 RAM

U1412 RAM - Implausible Vehicle Speed Signal Received

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3  What is this?
Table of contents

U1412 RAM Possible Causes

  • Faulty Transmission Control Module (TCM)
  • Transmission Control Module harness is open or shorted
  • Transmission Control Module circuit poor electrical connection

How is the U1412 RAM code repair?

Start by checking the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector's pins.

What is the cost to diagnose the U1412 RAM code

Labor: 1.0

The cost to diagnose the U1412 RAM code is 1.0 hour of labor. The auto repair's diagnosis time and labor rates vary by location, vehicle's make and model, and even your engine type. Most auto repair shops charge between $75 and $150 per hour.
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Possible Symptoms

  • Engine Light ON (or Service Engine Soon Warning Light)

U1412 RAM Meaning

The purpose of the monitoring is to detect rationality failures of the input speed and output speed sensor signals, as well as the wheel speed and engine speed, Controller Area Network (CAN) signals. There are three categories of rationalities which include: Multi-sensor comparisons of up to three signals (input, output, and wheel speed). Monitoring of the gradient of the input speed signal. Double failure monitoring to determine unique failure situations that could require unique limp-in functionality. The Diagnostic Trouble Code (DTC) sets when the failure is detected if the output speed gradient is less than a threshold for a calibrated amount of time.

More Information

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