OBD Guide
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C0124

Rear Inlet Valve Left

C0124 is an OBD-II diagnostic trouble code meaning: Rear Inlet Valve Left. Common causes: valve dirty or stuck, wiring harness problems. Estimated repair cost: $33–111.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$33–111 (est.)

Symptoms

  • ABS light is on
  • Reduced braking performance
  • Unusual behavior of the ESC system

Causes

  • Valve dirty or stuck
  • Wiring Harness Problems
  • ABS/ESC control unit malfunction
  • Low brake fluid level

How to Fix

  1. Check the brake fluid level
  2. Inspect the wiring harness and connectors
  3. Check valve resistance
  4. Replacing a faulty valve if necessary

Related codes

C0121C0122C0123C0125

Error C0124 by Vehicle Brand

AcuraAudiBAICBMWBYDBuickCadillacChanganCheryChevroletChryslerCitroenDodgeDongfengExeedFAWFordForthingFotonGACGMGMCGeelyGreat WallHavalHondaHongqiHyundaiInfinitiJACJaecooJaguarJeepJetourKaiyiKiaLadaLexusLi AutoLifanLincolnLivanMazdaMercedes-BenzMercuryMitsubishiNIONissanOldsmobileOmodaOpelPeugeotPlymouthPontiacRenaultSWMSaturnSkodaSkywellSubaruSuzukiTankToyotaVolkswagenVolvoVoyahXPengZeekrZotye

FAQ

What does the C0124 code mean?

C0124 is an OBD-II diagnostic trouble code that indicates: Rear Inlet Valve Left

What causes a C0124 error code?

The most common causes of C0124 include: Valve dirty or stuck; Wiring Harness Problems; ABS/ESC control unit malfunction; Low brake fluid level.

How do I fix a C0124 diagnostic trouble code?

To fix C0124: Check the brake fluid level. Inspect the wiring harness and connectors. Check valve resistance. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with C0124?

Limited driving only, diagnose soon

How much does it cost to fix C0124?

The estimated repair cost for C0124 is $33–111. Actual cost depends on your vehicle, location, and labor rates.

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