OBD Guide
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U0345

Software Incompatibility With Hybrid/EV Battery Interface Control Module L

U0345 is an OBD-II diagnostic trouble code meaning: Software Incompatibility With Hybrid/EV Battery Interface Control Module L. Common causes: incompatible software versions in ecu and battery module, data corruption in module memory. 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
  • Hybrid system power reduction
  • Errors in the operation of the energy recovery system
  • Inability to charge the battery
  • The vehicle goes into emergency mode

Causes

  • Incompatible software versions in ECU and battery module
  • Data corruption in module memory
  • Software update problems
  • Errors in the CAN bus
  • Physical damage to the battery management module

How to Fix

  1. Check software versions in both modules
  2. Update software to compatible versions
  3. Check the integrity of the CAN bus
  4. Reset errors and reboot the system
  5. If necessary, replace the battery management module

Related codes

U0344U0346U0401

Error U0345 by Vehicle Brand

AcuraAudiBAICBMWBYDBuickCadillacChanganCheryChevroletChryslerCitroenDodgeDongfengExeedFAWFordForthingFotonGACGMGMCGeelyGreat WallHavalHondaHongqiHyundaiInfinitiJACJaecooJaguarJeepJetourKaiyiKiaLadaLexusLi AutoLifanLincolnLivanMazdaMercedes-BenzMercuryMitsubishiNIONissanOldsmobileOmodaOpelPeugeotPlymouthPontiacRenaultSWMSaturnSkodaSkywellSubaruSuzukiTankToyotaVolkswagenVolvoVoyahXPengZeekrZotye

FAQ

What does the U0345 code mean?

U0345 is an OBD-II diagnostic trouble code that indicates: Software Incompatibility With Hybrid/EV Battery Interface Control Module L

What causes a U0345 error code?

The most common causes of U0345 include: Incompatible software versions in ECU and battery module; Data corruption in module memory; Software update problems; Errors in the CAN bus.

How do I fix a U0345 diagnostic trouble code?

To fix U0345: Check software versions in both modules. Update software to compatible versions. Check the integrity of the CAN bus. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with U0345?

Do not drive — repair immediately

How much does it cost to fix U0345?

The estimated repair cost for U0345 is $56–278. Actual cost depends on your vehicle, location, and labor rates.

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