Powertrain, generic · Fuel and air metering (injector circuit)

P02FC Cold Start Fuel Injection Control Circuit Low

Check engine lightOn
EmissionsRelevant
Drive cycleNot required
Limp modeNo

Cold start fuel injection is an extra injection system for cold starts – for example on flex-fuel engines running on high ethanol blends, where a Hyundai patent describes a small auxiliary tank, a cold-start injector and a heater. CARB lists such heated fuel preparation systems among the monitored output components. P02FC means the control circuit reads low – typically the control wire shorted to ground or a shorted turn in the cold-start injector. Depending on the circuit the valve then does not work, or it stays open and over-fuels the engine, causing fuel smell and hot-start problems. No manufacturer document using this code was found; unlike the older P0213/P0214, these codes separate the fault types.

Likely causes

Control wire chafed through, shorted to ground
Shorted turn in the cold-start injector or valve
Water or corrosion in the connector
Driver stage in the engine module

Symptoms

  • Check engine light on
  • Hard cold start, or over-fuelling with fuel smell if the valve stays open
  • Rough running when cold

Repair estimate

DifficultyMediumDIY possible
Parts and labour€50–400
Time0.5–2.5 h

Typical range across vehicles; the real cost depends on what the testing finds.

Parts involved

cold start injectorcold start fuel systeminjector wiring

Related codes

P02FBP02FDP02FEP0213P0214

References: law.cornell.edu, patents.google.com.