OBD Guide
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U04AF

Invalid Data Received From Hybrid/EV Battery Interface Control Module O

U04AF is an OBD-II diagnostic trouble code meaning: Invalid Data Received From Hybrid/EV Battery Interface Control Module O. Common causes: battery interface control module malfunction, problems with wiring or connectors. Estimated repair cost: $167–556.

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

Symptoms

  • Check Engine light comes on
  • Incorrect battery level display
  • Reduced power or operating efficiency
  • The car goes into emergency mode
  • Other related errors appear

Causes

  • Battery Interface Control Module Malfunction
  • Problems with wiring or connectors
  • Software error in control module
  • Module power problems
  • Corroded or damaged electrical connections

How to Fix

  1. Check connections and wiring to the Battery Interface Control Module
  2. Scan the system for other related errors
  3. Check power supply and grounding of the module
  4. Update or reflash module software
  5. Replace the Battery Interface Control Module if necessary

Related codes

U04AEU04B0U04B1

Error U04AF by Vehicle Brand

AcuraAudiBAICBMWBYDBuickCadillacChanganCheryChevroletChryslerCitroenDodgeDongfengExeedFAWFordForthingFotonGACGMGMCGeelyGreat WallHavalHondaHongqiHyundaiInfinitiJACJaecooJaguarJeepJetourKaiyiKiaLadaLexusLi AutoLifanLincolnLivanMazdaMercedes-BenzMercuryMitsubishiNIONissanOldsmobileOmodaOpelPeugeotPlymouthPontiacRenaultSWMSaturnSkodaSkywellSubaruSuzukiTankToyotaVolkswagenVolvoVoyahXPengZeekrZotye

FAQ

What does the U04AF code mean?

U04AF is an OBD-II diagnostic trouble code that indicates: Invalid Data Received From Hybrid/EV Battery Interface Control Module O

What causes a U04AF error code?

The most common causes of U04AF include: Battery Interface Control Module Malfunction; Problems with wiring or connectors; Software error in control module; Module power problems.

How do I fix a U04AF diagnostic trouble code?

To fix U04AF: Check connections and wiring to the Battery Interface Control Module. Scan the system for other related errors. Check power supply and grounding of the module. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with U04AF?

Limited driving only, diagnose soon

How much does it cost to fix U04AF?

The estimated repair cost for U04AF is $167–556. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat