OBD Guide
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B3928

Incorrect Environmental Identifier Received from Telematics Communication Interface Control Module

B3928 is an OBD-II diagnostic trouble code meaning: Incorrect Environmental Identifier Received from Telematics Communication Interface Control Module. Common causes: telematics module software failure, damage to telematics module wiring harness. Estimated repair cost: $56–167.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$56–167 (est.)

Symptoms

  • Check Engine light comes on
  • Problems connecting to telematics services
  • Remote control malfunctions

Causes

  • Telematics module software failure
  • Damage to telematics module wiring harness
  • Contact corrosion
  • Data mismatch in module memory

How to Fix

  1. Check connections and wiring harness of telematics module
  2. Flash or update module software
  3. Replace the telematics module if necessary
  4. Check the CAN bus for errors

Related codes

U0100U0121B3927

Error B3928 by Vehicle Brand

AcuraAudiBAICBMWBYDBuickCadillacChanganCheryChevroletChryslerCitroenDodgeDongfengExeedFAWFordForthingFotonGACGMGMCGeelyGreat WallHavalHondaHongqiHyundaiInfinitiJACJaecooJaguarJeepJetourKaiyiKiaLadaLexusLi AutoLifanLincolnLivanMazdaMercedes-BenzMercuryMitsubishiNIONissanOldsmobileOmodaOpelPeugeotPlymouthPontiacRenaultSWMSaturnSkodaSkywellSubaruSuzukiTankToyotaVolkswagenVolvoVoyahXPengZeekrZotye

FAQ

What does the B3928 code mean?

B3928 is an OBD-II diagnostic trouble code that indicates: Incorrect Environmental Identifier Received from Telematics Communication Interface Control Module

What causes a B3928 error code?

The most common causes of B3928 include: Telematics module software failure; Damage to telematics module wiring harness; Contact corrosion; Data mismatch in module memory.

How do I fix a B3928 diagnostic trouble code?

To fix B3928: Check connections and wiring harness of telematics module. Flash or update module software. Replace the telematics module if necessary. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B3928?

Limited driving only, diagnose soon

How much does it cost to fix B3928?

The estimated repair cost for B3928 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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