Engine-Codes - Generic - U1440

U1440 - Implausible/Missing Programmed Transfer Case Hi Ratio

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

U1440 Possible Causes

  • 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 is the U1440 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 U1440 code

Labor: 1.0

The cost to diagnose the U1440 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)

U1440 Meaning

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. This fault is set when any other values other than 1.0 is received, or the message is not received for more than 10.5 seconds.

More Information

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Information for specific makes

  • U1440 CHRYSLER Implausible/Missing Programmed Transfer Case Hi Ratio
  • U1440 DODGE Implausible/Missing Programmed Transfer Case Hi Ratio
  • U1440 JEEP Implausible/Missing Programmed Transfer Case Hi Ratio
  • U1440 RAM Implausible/Missing Programmed Transfer Case Hi Ratio

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