OBD Guide
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U0306

Software Incompatibility With Fuel Injector Control Module

U0306 is an OBD-II diagnostic trouble code meaning: Software Incompatibility With Fuel Injector Control Module. Common causes: incorrect ecu software update, using inappropriate software. Estimated repair cost: $33–167.

Severity
🔴 High
Can you drive?
Do not drive — repair immediately
Approx. repair cost
$33–167 (est.)

Symptoms

  • Unstable engine operation
  • Increased fuel consumption
  • Check Engine light comes on
  • Loss of engine power
  • The engine may not start

Causes

  • Incorrect ECU software update
  • Using inappropriate software
  • Memory damage to the injector control module
  • Problems with communication between modules
  • Mechanical damage to the control module

How to Fix

  1. Check the software version in the ECU and injector control module
  2. Reflash the injector control module
  3. Update ECU software to the latest version
  4. Check the integrity of wiring and connectors
  5. If necessary, replace the injector control module

Related codes

U0300U0301U0305U0307

Error U0306 by Vehicle Brand

AcuraAudiBAICBMWBYDBuickCadillacChanganCheryChevroletChryslerCitroenDodgeDongfengExeedFAWFordForthingFotonGACGMGMCGeelyGreat WallHavalHondaHongqiHyundaiInfinitiJACJaecooJaguarJeepJetourKaiyiKiaLadaLexusLi AutoLifanLincolnLivanMazdaMercedes-BenzMercuryMitsubishiNIONissanOldsmobileOmodaOpelPeugeotPlymouthPontiacRenaultSWMSaturnSkodaSkywellSubaruSuzukiTankToyotaVolkswagenVolvoVoyahXPengZeekrZotye

FAQ

What does the U0306 code mean?

U0306 is an OBD-II diagnostic trouble code that indicates: Software Incompatibility With Fuel Injector Control Module

What causes a U0306 error code?

The most common causes of U0306 include: Incorrect ECU software update; Using inappropriate software; Memory damage to the injector control module; Problems with communication between modules.

How do I fix a U0306 diagnostic trouble code?

To fix U0306: Check the software version in the ECU and injector control module. Reflash the injector control module. Update ECU software to the latest version. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with U0306?

Do not drive — repair immediately

How much does it cost to fix U0306?

The estimated repair cost for U0306 is $33–167. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat