OBD Guide
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U045B

Invalid Data Received From Anti-Lock Brake System (ABS) Control Module B

U045B is an OBD-II diagnostic trouble code meaning: Invalid Data Received From Anti-Lock Brake System (ABS) Control Module B. Common causes: can bus problems, abs module b malfunction. Estimated repair cost: $167–556.

Severity
🔴 High
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$167–556 (est.)

Symptoms

  • The ABS indicator on the dashboard is on
  • Check Engine Light Is On
  • Disabling stability control
  • Unstable ABS operation
  • Errors in other related systems

Causes

  • CAN bus problems
  • ABS module B malfunction
  • Damage to the wiring harness to the ABS module
  • Poor contact in connectors
  • ABS module power problems

How to Fix

  1. Check connections and connectors of ABS module B
  2. Check the integrity of the wiring harness
  3. Carry out CAN bus diagnostics
  4. Check the power and ground of the ABS module
  5. If necessary, replace ABS B module
  6. Repair only from an authorized dealer

Related codes

U045AU045CC0051

Error U045B by Vehicle Brand

AcuraAudiBAICBMWBYDBuickCadillacChanganCheryChevroletChryslerCitroenDodgeDongfengExeedFAWFordForthingFotonGACGMGMCGeelyGreat WallHavalHondaHongqiHyundaiInfinitiJACJaecooJaguarJeepJetourKaiyiKiaLadaLexusLi AutoLifanLincolnLivanMazdaMercedes-BenzMercuryMitsubishiNIONissanOldsmobileOmodaOpelPeugeotPlymouthPontiacRenaultSWMSaturnSkodaSkywellSubaruSuzukiTankToyotaVolkswagenVolvoVoyahXPengZeekrZotye

FAQ

What does the U045B code mean?

U045B is an OBD-II diagnostic trouble code that indicates: Invalid Data Received From Anti-Lock Brake System (ABS) Control Module B

What causes a U045B error code?

The most common causes of U045B include: CAN bus problems; ABS module B malfunction; Damage to the wiring harness to the ABS module; Poor contact in connectors.

How do I fix a U045B diagnostic trouble code?

To fix U045B: Check connections and connectors of ABS module B. Check the integrity of the wiring harness. Carry out CAN bus diagnostics. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with U045B?

Limited driving only, diagnose soon

How much does it cost to fix U045B?

The estimated repair cost for U045B is $167–556. Actual cost depends on your vehicle, location, and labor rates.

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