OBD Guide
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P03FB

Ignition K Control Signal Circuit Low

P03FB is an OBD-II diagnostic trouble code meaning: Ignition K Control Signal Circuit Low. Common causes: open or short circuit in wiring harness, ignition coil malfunction. Estimated repair cost: $56–167.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$56–167 (est.)

Symptoms

  • Misfires
  • Unstable engine operation
  • Power Loss
  • Increased fuel consumption

Causes

  • Open or short circuit in wiring harness
  • Ignition coil malfunction
  • Problems with connectors
  • ECU malfunction

How to Fix

  1. Check wiring harness for damage
  2. Check ignition coil connectors
  3. Check the ignition coil
  4. Check ECU for errors

Related codes

P0300P0301P0302P0303P0304

Error P03FB by Vehicle Brand

AcuraAudiBAICBMWBYDBuickCadillacChanganCheryChevroletChryslerCitroenDodgeDongfengExeedFAWFordForthingFotonGACGMGMCGeelyGreat WallHavalHondaHongqiHyundaiInfinitiJACJaecooJaguarJeepJetourKaiyiKiaLadaLexusLi AutoLifanLincolnLivanMazdaMercedes-BenzMercuryMitsubishiNIONissanOldsmobileOmodaOpelPeugeotPlymouthPontiacRenaultSWMSaturnSkodaSkywellSubaruSuzukiTankToyotaVolkswagenVolvoVoyahXPengZeekrZotye

FAQ

What does the P03FB code mean?

P03FB is an OBD-II diagnostic trouble code that indicates: Ignition K Control Signal Circuit Low

What causes a P03FB error code?

The most common causes of P03FB include: Open or short circuit in wiring harness; Ignition coil malfunction; Problems with connectors; ECU malfunction.

How do I fix a P03FB diagnostic trouble code?

To fix P03FB: Check wiring harness for damage. Check ignition coil connectors. Check the ignition coil. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P03FB?

Limited driving only, diagnose soon

How much does it cost to fix P03FB?

The estimated repair cost for P03FB is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat