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Engine-Codes - Generic - U2146

U2146 - Lost Communication With Shift Lever Module

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

U2146 Possible Causes

What does this mean?
  • Faulty Shift Lever Module (SLM)
  • Shift Lever Module harness is open or shorted
  • Shift Lever Module circuit poor electrical connection

How is the U2146 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 U2146 code

Labor: 1.0

The cost to diagnose the U2146 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)

U2146 Meaning

Devices connected to the serial data circuits monitor for serial data communications during normal vehicle operation. Operating information and commands are exchanged among the devices. The devices have prerecorded information about what messages are needed to be exchanged on the serial data circuits, for each virtual network. The messages are supervised and also, some periodic messages are used by the receiver device as an availability indication of the transmitter device. Each message contains the identification number of the transmitter device. A loss of serial data communications Diagnostic Trouble Code (DTC) does not represent a failure of the devices that contain the stored code. The DTC will set when a supervised periodic message that includes the transmitter device availability has not been received.

More Information

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