A few engines use two cold start injectors, or a second cold start fuel circuit, to help them fire on a cold morning. A P0214 code means the engine computer found a fault in the circuit for cold start injector 2.
Because this code is uncommon, this guide explains where a second cold start injector is used, how it is controlled and how to test the circuit step by step.
P0214 Code Breakdown
Every OBD-II code follows the same five-character pattern set by the SAE J2012 standard. Each character narrows down which system has the fault. This table shows what each part of the code tells you.
| Character | Meaning | What It Tells You |
|---|---|---|
| P | Powertrain | The fault is in the engine or transmission systems. |
| 0 | Generic (SAE) code | The definition is the same on every OBD-II vehicle. |
| 2 | Fuel and air metering | The fault involves fuel and air metering, such as injectors, the fuel pump, throttle sensors or boost control. |
| 14 | Specific fault | Cold Start Injector 2 Malfunction |
What the P0214 Code Means
The SAE J2012 standard defines the P0214 code as Cold Start Injector 2 Malfunction. A cold start injector, sometimes called a cold start valve, sprays extra fuel into the intake for a few seconds when a cold engine is cranking. That richer mixture helps the fuel vaporize and fire when the engine is cold.
On older systems, a thermo-time switch in the coolant controlled the injector by grounding it only while the engine was cold. On engines with an OBD-II cold start circuit, the powertrain control module (PCM) controls or monitors it and checks that the circuit voltage matches the command.
Engines with a second cold start injector are rare. Some designs use one per bank or one per intake plenum. On a few vehicles, the code is linked to a different cold start device, such as an intake heater, so check the service manual to see exactly what cold start injector 2 means on your engine.
Signs of a Cold Start Injector Problem
Symptoms usually appear only when the engine is cold. Common signs of a P0214 code include:
- Check engine light on
- Hard starting or long cranking on cold mornings
- Rough running for the first few seconds after a cold start
- Black smoke or a fuel smell at start-up if the injector leaks
- Flooding or hard hot starts if the injector stays open
Because a second cold start injector is rare, it is worth confirming the code with a second scan tool. Some generic tools show a basic description that does not match what the manufacturer uses the code for.
What Causes the P0214 Code?
The circuit is simple, so the list of causes is short:
- Open or shorted injector coil. The cold start injector fails electrically.
- Damaged wiring or connector. Heat and engine movement crack wires near the intake.
- Failed thermo-time switch or temperature input. On older designs, the switch that grounds the injector can fail.
- Blown fuse or failed relay. The injector loses its power feed.
- Leaking or stuck injector. A stuck valve can flood the engine, though this does not always set a circuit code.
- PCM driver fault. Rare.
Tools You Will Need
You can do most of this testing at home with basic tools:
- OBD-II scan tool
- Digital multimeter
- Test light
- Wiring diagram for your engine
- Fuel-rated shop towels and safety glasses
Step-By-Step Diagnosis of the P0214 Code
Start by confirming that your engine actually has a cold start injector and where it sits. It is usually mounted on the intake plenum.
Inspect the Injector and Wiring
Find the cold start injector on the intake and check its connector, wiring and fuel line. Look for cracked plastic, corrosion and wet fuel around the body.
Check Power and Ground
Unplug the injector. With the key on or while cranking, check for battery voltage on the feed wire. On designs where the PCM or switch grounds the circuit, a test light across the two pins should light only while the engine is cold and cranking.
No power points to a fuse, relay or broken feed wire. Power but no ground points to the control side.
Measure Injector Resistance
Measure across the injector terminals and compare it with the value in your service manual. Many cold start injectors read only a few ohms. An open reading or a dead short means the injector has failed.
Test the Thermo-Time Switch
On engines that use one, measure the switch resistance with the engine cold and again when warm. It should switch at the temperature listed in the service manual.
Repairs That Clear the P0214 Code
Match the repair to what your tests found. Then clear the code and drive under the same conditions that set it.
- Repair damaged wiring and replace a cracked connector.
- Replace a failed fuse or relay after finding why it failed.
- Replace cold start injector 2 if it is open, shorted or leaking. Use new seals.
- Replace a faulty thermo-time switch if it does not switch at the right temperature.
The cold start injector is part of the fuel system. Relieve fuel pressure, work in a ventilated area and keep sparks away before you open any fuel line.
Check for a technical service bulletin for your vehicle before you buy parts. On uncommon codes like this one, the manufacturer may list a known wiring fault, a software update or a revised part.
Common Mistakes to Avoid
These mistakes waste money or leave the real fault in place:
- Replacing main fuel injectors when the code points to the cold start circuit
- Ignoring a leaking cold start injector, which can flood the engine and wash oil off the cylinders
- Testing the circuit on a warm engine when it only works cold
- Skipping the fuse and relay checks
What Repairs Cost
The cost to fix a P0214 code depends on the cause. This table shows typical ranges for parts and labor.
| Repair | DIY Cost | Typical Shop Cost |
|---|---|---|
| Wiring or connector repair | $10 to $40 | $100 to $250 |
| Fuse or relay | $5 to $40 | $50 to $150 |
| Cold start injector | $40 to $200 | $150 to $400 |
| Thermo-time switch | $20 to $80 | $100 to $250 |
Is It Safe to Keep Driving with a P0214 Code?
Usually, yes. Most engines start and run without the cold start injector, though they may crank longer in cold weather.
If the injector is leaking fuel or sticking open, stop driving. A leaking injector can flood the engine, damage the catalytic converter and create a fire risk.
Related Codes
These codes often show up with this one or point to the same system:
| Code | Meaning |
|---|---|
| P0213 | Cold Start Injector 1 Malfunction |
| P0200 | Injector Circuit Malfunction |
| P0117 | Engine Coolant Temperature Circuit Low Input |
| P0118 | Engine Coolant Temperature Circuit High Input |
| P0300 | Random/Multiple Cylinder Misfire Detected |
Fixing the Cold Start Circuit
A P0214 code means the PCM found a fault in a cold start injector circuit. Wiring faults, failed injectors and bad temperature switches cause most cases.
- Confirm your engine has a cold start injector.
- Inspect the wiring and look for fuel leaks.
- Check power and ground on a cold engine.
- Measure injector resistance against the service manual.
Frequently Asked Questions
Do Modern Cars Have Cold Start Injectors?
Very few do. Modern engines use the main fuel injectors to add extra fuel during a cold start, so a separate injector is not needed. Cold start injectors were common on older Bosch-style fuel systems and on some early flex fuel cars.
Can a Cold Start Injector Cause Hard Hot Starts?
Yes, if it leaks. A leaking injector drips fuel into the intake after shutdown, which floods the engine and makes hot starts hard. You may smell fuel or see black smoke right after start-up.
Is the P0214 Code Serious?
Usually not, if the injector simply does not work. The engine may start slowly in cold weather. It becomes serious if the injector leaks fuel, which can flood the engine and harm the catalytic converter.
Where Is the Cold Start Injector?
When fitted, it is usually mounted on the intake plenum or the throttle body area, with a short fuel line from the fuel rail. Your service manual shows the exact location for your engine.
Can I Drive Without Cold Start Injector 2?
Usually, yes. The engine may crank longer and run rough for a few seconds in cold weather, but it should run normally once warm. Fix any fuel leak right away, though, since a leak near the intake is a fire risk.