OBD Guide
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C0315

Module Ground Circuit

C0315 is an OBD-II diagnostic trouble code meaning: Module Ground Circuit. Common causes: poor module grounding, oxidized or loose contacts. Estimated repair cost: $22–111.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$22–111 (est.)

Symptoms

  • Unstable operation of electronic systems
  • Warning lights on the dashboard come on
  • Error-related module malfunctions

Causes

  • Poor module grounding
  • Oxidized or loose contacts
  • Damaged wiring harness
  • Internal module fault

How to Fix

  1. Check the quality of the module grounding
  2. Clean and tighten ground connections
  3. Inspect the wiring harness for damage
  4. Replace the module if necessary

Related codes

C0310C0311C0327

Error C0315 by Vehicle Brand

AcuraAudiBAICBMWBYDBuickCadillacChanganCheryChevroletChryslerCitroenDodgeDongfengExeedFAWFordForthingFotonGACGMGMCGeelyGreat WallHavalHondaHongqiHyundaiInfinitiJACJaecooJaguarJeepJetourKaiyiKiaLadaLexusLi AutoLifanLincolnLivanMazdaMercedes-BenzMercuryMitsubishiNIONissanOldsmobileOmodaOpelPeugeotPlymouthPontiacRenaultSWMSaturnSkodaSkywellSubaruSuzukiTankToyotaVolkswagenVolvoVoyahXPengZeekrZotye

FAQ

What does the C0315 code mean?

C0315 is an OBD-II diagnostic trouble code that indicates: Module Ground Circuit

What causes a C0315 error code?

The most common causes of C0315 include: Poor module grounding; Oxidized or loose contacts; Damaged wiring harness; Internal module fault.

How do I fix a C0315 diagnostic trouble code?

To fix C0315: Check the quality of the module grounding. Clean and tighten ground connections. Inspect the wiring harness for damage. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with C0315?

Limited driving only, diagnose soon

How much does it cost to fix C0315?

The estimated repair cost for C0315 is $22–111. Actual cost depends on your vehicle, location, and labor rates.

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