OBD Guide
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U01AE

Lost Communication With Hybrid/EV Battery Interface Control Module O

U01AE is an OBD-II diagnostic trouble code meaning: Lost Communication With Hybrid/EV Battery Interface Control Module O. Common causes: broken or damaged wires in the communication circuit, battery management module malfunction. Estimated repair cost: $56–278.

Severity
🔴 High
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$56–278 (est.)

Symptoms

  • Check Engine light comes on
  • Reduced power or transition to emergency mode
  • Problems charging the hybrid battery
  • Inability to switch to electric mode (for hybrids)
  • Error messages on the dashboard

Causes

  • Broken or damaged wires in the communication circuit
  • Battery management module malfunction
  • Module power problems
  • Corrosion of connectors
  • Software error in the control system

How to Fix

  1. Check the integrity of the wiring harness between the modules
  2. Check the power and ground of the battery control module
  3. Inspect connectors for corrosion or damage
  4. Diagnose the battery control module
  5. Update control system software
  6. Repair only from an authorized dealer

Related codes

U01AFU0100U0101

Error U01AE by Vehicle Brand

AcuraAudiBAICBMWBYDBuickCadillacChanganCheryChevroletChryslerCitroenDodgeDongfengExeedFAWFordForthingFotonGACGMGMCGeelyGreat WallHavalHondaHongqiHyundaiInfinitiJACJaecooJaguarJeepJetourKaiyiKiaLadaLexusLi AutoLifanLincolnLivanMazdaMercedes-BenzMercuryMitsubishiNIONissanOldsmobileOmodaOpelPeugeotPlymouthPontiacRenaultSWMSaturnSkodaSkywellSubaruSuzukiTankToyotaVolkswagenVolvoVoyahXPengZeekrZotye

FAQ

What does the U01AE code mean?

U01AE is an OBD-II diagnostic trouble code that indicates: Lost Communication With Hybrid/EV Battery Interface Control Module O

What causes a U01AE error code?

The most common causes of U01AE include: Broken or damaged wires in the communication circuit; Battery management module malfunction; Module power problems; Corrosion of connectors.

How do I fix a U01AE diagnostic trouble code?

To fix U01AE: Check the integrity of the wiring harness between the modules. Check the power and ground of the battery control module. Inspect connectors for corrosion or damage. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with U01AE?

Limited driving only, diagnose soon

How much does it cost to fix U01AE?

The estimated repair cost for U01AE is $56–278. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat