P0214 — Cold Start Injector 2

Causes

• Open or shorted wiring to cold start injector #2
• Faulty cold start injector (stuck open, stuck closed, or internal coil failure)
• Poor connector pin contact, corrosion, or water intrusion
• Blown fuse or failed relay supplying the cold start injector circuit
• Faulty ECM / driver transistor in the ECM
• Incorrect or contaminated fuel supply to the cold start injector

Symptoms

• Hard starting or extended cranking when engine is cold
• Rough idle or misfire immediately after a cold start
• Increased white/black smoke during cold start (depending on fault)
• Check Engine Light (MIL) with code P0214 stored
• Cold-start enrichment not operating correctly

What to check

• Read freeze frame and freeze data to confirm conditions when the fault set (ambient temp, engine temp, crank status).
• Verify vehicle is in the cold-start condition used when the code was stored (low coolant/air temp).
• Visually inspect connector and wiring for injector #2 for corrosion, damage, or loose terminals.
• Check fuses and relays related to cold start injector circuit.
• Backprobe the injector connector during crank to observe command voltage and ground using a multimeter or scope.
• Measure coil resistance of the cold start injector and compare to vehicle specification.

Signal parameters

• Injector coil resistance: typically in the range of about 1–20 Ω (check vehicle-specific spec).
• Activation voltage: ~12 V available to injector; ECM switches ground or supply to pulse the injector during cranking.
• Drive method: short pulses during cold start enrichment; duration and timing vary by manufacturer.
• Typical drive current: injector solenoids draw up to a few amps when energized (use a clamp meter for in-circuit check).

Similar codes