Engine-Codes - Chevrolet - U1842 CHEVROLET

U1842 CHEVROLET - Lost Communication With ECM/PCM

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

U1842 CHEVROLET Possible Causes

  • Faulty Engine Control Module (ECM)/Powertrain Control Module (PCM)
  • Engine Control Module /Powertrain Control Module harness is open or shorted
  • Engine Control Module /Powertrain Control Module circuit poor electrical connection

How is the U1842 CHEVROLET 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 U1842 CHEVROLET code

Labor: 1.0

The cost to diagnose the U1842 CHEVROLET 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)

U1842 CHEVROLET Meaning

The system voltage is between 9-16 volts. The vehicle power mode master indicates that the need for serial data communications. The Diagnostic Trouble Code (DTC) will set when a supervised periodic message that includes the transmitter device availability has not been received.

More Information

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