OBD Guide
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U0233

Lost Communication With Side Obstacle Detection Control Module B

U0233 is an OBD-II diagnostic trouble code meaning: Lost Communication With Side Obstacle Detection Control Module B. Common causes: open or short circuit in module wiring harness, side obstacle sensing module b malfunction. Estimated repair cost: $167–444.

Severity
⚠️ Medium
Can you drive?
Do not drive — repair immediately
Approx. repair cost
$167–444 (est.)

Symptoms

  • Disabling the Blind Spot Warning System
  • Parking sensors on one side do not work
  • The security system malfunction indicator lights up
  • Error message on the dashboard
  • Reduced functionality of driver assistance systems

Causes

  • Open or short circuit in module wiring harness
  • Side Obstacle Sensing Module B Malfunction
  • Problems with module power supply (blown fuse)
  • Poor contact in the module connector
  • Damage to the module due to external influences (humidity, shocks)

How to Fix

  1. Check fuses associated with the system
  2. Inspect the wiring harness and module connectors for damage.
  3. Check the power supply and ground of the module
  4. Scan the module for additional errors
  5. Replace side obstacle detection module B if necessary
  6. Repair only from an authorized dealer

Related codes

U0232U0234U0235

Error U0233 by Vehicle Brand

AcuraAudiBAICBMWBYDBuickCadillacChanganCheryChevroletChryslerCitroenDodgeDongfengExeedFAWFordForthingFotonGACGMGMCGeelyGreat WallHavalHondaHongqiHyundaiInfinitiJACJaecooJaguarJeepJetourKaiyiKiaLadaLexusLi AutoLifanLincolnLivanMazdaMercedes-BenzMercuryMitsubishiNIONissanOldsmobileOmodaOpelPeugeotPlymouthPontiacRenaultSWMSaturnSkodaSkywellSubaruSuzukiTankToyotaVolkswagenVolvoVoyahXPengZeekrZotye

FAQ

What does the U0233 code mean?

U0233 is an OBD-II diagnostic trouble code that indicates: Lost Communication With Side Obstacle Detection Control Module B

What causes a U0233 error code?

The most common causes of U0233 include: Open or short circuit in module wiring harness; Side Obstacle Sensing Module B Malfunction; Problems with module power supply (blown fuse); Poor contact in the module connector.

How do I fix a U0233 diagnostic trouble code?

To fix U0233: Check fuses associated with the system. Inspect the wiring harness and module connectors for damage.. Check the power supply and ground of the module. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with U0233?

Do not drive — repair immediately

How much does it cost to fix U0233?

The estimated repair cost for U0233 is $167–444. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat