OBD Guide
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U01A5

Lost Communication With Hybrid/EV Battery Interface Control Module F

U01A5 is an OBD-II diagnostic trouble code meaning: Lost Communication With Hybrid/EV Battery Interface Control Module F. Common causes: broken or damaged wiring to the battery module, battery controller malfunction. Estimated repair cost: $56–278.

Severity
🔴 High
Can you drive?
Do not drive — repair immediately
Approx. repair cost
$56–278 (est.)

Symptoms

  • Check Engine light comes on
  • Reduced vehicle power
  • Switching to emergency mode
  • Errors in the operation of the hybrid system
  • Battery charge information is not available

Causes

  • Broken or damaged wiring to the battery module
  • Battery controller malfunction
  • Control module software failure
  • Module power problems
  • Corrosion of connectors

How to Fix

  1. Check the integrity of the wiring harness
  2. Inspect the battery management module connectors
  3. Check fuses and module power relays
  4. Scan the battery module for additional error codes
  5. Update or reflash the control module software (if available)
  6. Repair only from an authorized dealer

Related codes

U01A0U01A1U01A4

Error U01A5 by Vehicle Brand

AcuraAudiBAICBMWBYDBuickCadillacChanganCheryChevroletChryslerCitroenDodgeDongfengExeedFAWFordForthingFotonGACGMGMCGeelyGreat WallHavalHondaHongqiHyundaiInfinitiJACJaecooJaguarJeepJetourKaiyiKiaLadaLexusLi AutoLifanLincolnLivanMazdaMercedes-BenzMercuryMitsubishiNIONissanOldsmobileOmodaOpelPeugeotPlymouthPontiacRenaultSWMSaturnSkodaSkywellSubaruSuzukiTankToyotaVolkswagenVolvoVoyahXPengZeekrZotye

FAQ

What does the U01A5 code mean?

U01A5 is an OBD-II diagnostic trouble code that indicates: Lost Communication With Hybrid/EV Battery Interface Control Module F

What causes a U01A5 error code?

The most common causes of U01A5 include: Broken or damaged wiring to the battery module; Battery controller malfunction; Control module software failure; Module power problems.

How do I fix a U01A5 diagnostic trouble code?

To fix U01A5: Check the integrity of the wiring harness. Inspect the battery management module connectors. Check fuses and module power relays. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with U01A5?

Do not drive — repair immediately

How much does it cost to fix U01A5?

The estimated repair cost for U01A5 is $56–278. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat