OBD Guide
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U044B

Invalid Data Received From Battery Energy Control Module C

U044B is an OBD-II diagnostic trouble code meaning: Invalid Data Received From Battery Energy Control Module C. Common causes: battery energy management module c malfunction, open or short circuit in the communication circuit. Estimated repair cost: $167–556.

Severity
🔴 High
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$167–556 (est.)

Symptoms

  • The Check Engine light comes on
  • The car may go into emergency mode
  • Reduced power or limited functionality
  • Battery charging problems
  • Error messages on the dashboard

Causes

  • Battery Energy Management Module C malfunction
  • Open or short circuit in the communication circuit
  • Poor contacts or corroded connectors
  • Problems with the CAN network
  • Control module software error

How to Fix

  1. Check the status of the module with a diagnostic scanner
  2. Inspect the connectors and wiring of the control module
  3. Check supply voltage and integrity of communication circuits
  4. Update module software (if required)
  5. Replace Battery Energy Management Module C if necessary

Related codes

U044AU044CU0401

Error U044B by Vehicle Brand

AcuraAudiBAICBMWBYDBuickCadillacChanganCheryChevroletChryslerCitroenDodgeDongfengExeedFAWFordForthingFotonGACGMGMCGeelyGreat WallHavalHondaHongqiHyundaiInfinitiJACJaecooJaguarJeepJetourKaiyiKiaLadaLexusLi AutoLifanLincolnLivanMazdaMercedes-BenzMercuryMitsubishiNIONissanOldsmobileOmodaOpelPeugeotPlymouthPontiacRenaultSWMSaturnSkodaSkywellSubaruSuzukiTankToyotaVolkswagenVolvoVoyahXPengZeekrZotye

FAQ

What does the U044B code mean?

U044B is an OBD-II diagnostic trouble code that indicates: Invalid Data Received From Battery Energy Control Module C

What causes a U044B error code?

The most common causes of U044B include: Battery Energy Management Module C malfunction; Open or short circuit in the communication circuit; Poor contacts or corroded connectors; Problems with the CAN network.

How do I fix a U044B diagnostic trouble code?

To fix U044B: Check the status of the module with a diagnostic scanner. Inspect the connectors and wiring of the control module. Check supply voltage and integrity of communication circuits. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with U044B?

Limited driving only, diagnose soon

How much does it cost to fix U044B?

The estimated repair cost for U044B is $167–556. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat