OBD Guide
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B3031

Security System Controller In Learn Mode

Severity
⚠️ Medium
Can you drive?
Do not drive — repair immediately
Approx. repair cost
$56–167 (est.)

Symptoms

  • Check Engine light comes on
  • Problems starting the engine
  • Security system blocks engine operation

Causes

  • Activating learning mode after replacing keys or immobilizer
  • Security controller software failure
  • Problems with the security system wiring harness or connectors

How to Fix

  1. Check service history (whether keys or immobilizer were replaced)
  2. Reset the error with an OBD-II scanner and check if it returns
  3. Check the integrity of the wiring harness and connectors of the security system
  4. If necessary, reprogram the security system controller

Related codes

B3030B3032P0510

Error B3031 by Vehicle Brand

AcuraAudiBAICBMWBYDBuickCadillacChanganCheryChevroletChryslerCitroenDodgeDongfengExeedFAWFordForthingFotonGACGMGMCGeelyGreat WallHavalHondaHongqiHyundaiInfinitiJACJaecooJaguarJeepJetourKaiyiKiaLadaLexusLi AutoLifanLincolnLivanMazdaMercedes-BenzMercuryMitsubishiNIONissanOldsmobileOmodaOpelPeugeotPlymouthPontiacRenaultSWMSaturnSkodaSkywellSubaruSuzukiTankToyotaVolkswagenVolvoVoyahXPengZeekrZotye
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