OBD Guide
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B3110

Keyless Entry Transmitter 2 Battery

B3110 is an OBD-II diagnostic trouble code meaning: Keyless Entry Transmitter 2 Battery. Common causes: low battery in key fob, key fob malfunction. Estimated repair cost: $2–11.

Severity
✅ Low
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$2–11 (est.)

Symptoms

  • Problems with remote door opening
  • The key fob does not respond to pressing
  • The system does not recognize the key fob to start the engine

Causes

  • Low battery in key fob
  • Key fob malfunction
  • Receiver antenna problems

How to Fix

  1. Replace the battery in the key fob
  2. Check the serviceability of the key fob
  3. Diagnose the signal receiver antenna

Related codes

B3100B3111

Error B3110 by Vehicle Brand

AcuraAudiBAICBMWBYDBuickCadillacChanganCheryChevroletChryslerCitroenDodgeDongfengExeedFAWFordForthingFotonGACGMGMCGeelyGreat WallHavalHondaHongqiHyundaiInfinitiJACJaecooJaguarJeepJetourKaiyiKiaLadaLexusLi AutoLifanLincolnLivanMazdaMercedes-BenzMercuryMitsubishiNIONissanOldsmobileOmodaOpelPeugeotPlymouthPontiacRenaultSWMSaturnSkodaSkywellSubaruSuzukiTankToyotaVolkswagenVolvoVoyahXPengZeekrZotye

FAQ

What does the B3110 code mean?

B3110 is an OBD-II diagnostic trouble code that indicates: Keyless Entry Transmitter 2 Battery

What causes a B3110 error code?

The most common causes of B3110 include: Low battery in key fob; Key fob malfunction; Receiver antenna problems.

How do I fix a B3110 diagnostic trouble code?

To fix B3110: Replace the battery in the key fob. Check the serviceability of the key fob. Diagnose the signal receiver antenna. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B3110?

Yes, but get it checked soon

How much does it cost to fix B3110?

The estimated repair cost for B3110 is $2–11. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat