P0213 is a generic OBD-II powertrain code that indicates a problem with the Cold Start Injector 1 circuit/system. Unlike P0201–P0212, which identify individual cylinder injector circuits, P0213 specifically refers to Cold Start Injector 1.
The fault does not automatically mean that the cold-start injector itself has failed. The problem may involve the injector, connector, wiring, fuse, relay, power supply, control circuit, temperature input, or ECM/PCM control.
P0213 Code Definition
- Code: P0213
- System: Engine fuel and cold-start control
- Type: Generic OBD-II Powertrain DTC
- Definition: Cold Start Injector 1 Malfunction
What Does P0213 Mean?
The cold-start injector is used on certain engine designs to provide additional fuel during cold starting. The ECM/PCM determines when additional enrichment is required based on engine operating conditions and temperature-related inputs.
When the module detects an abnormal electrical condition or malfunction involving Cold Start Injector 1, it can store P0213.
Important: Modern vehicles frequently use electronically controlled fuel injectors without a separate cold-start injector. Therefore, P0213 should always be interpreted according to the exact vehicle and engine application.
Symptoms of P0213
- Check Engine Light.
- Hard cold starting.
- Extended cranking when the engine is cold.
- Rough idle immediately after starting.
- Cold-start hesitation.
- Engine may stall shortly after starting.
- Poor cold drivability.
- Rich or lean cold-start condition.
- Reduced fuel economy in some cases.
In some vehicles, the engine may operate normally after reaching operating temperature because the cold-start enrichment function is primarily important during cold conditions.
Common Causes of P0213
- Faulty cold-start injector.
- Open or shorted injector circuit.
- Damaged injector connector.
- Loose or corroded terminals.
- Broken wiring.
- High resistance in the injector circuit.
- Loss of injector power supply.
- Blown fuse.
- Faulty injector relay where applicable.
- Incorrect coolant-temperature information.
- Engine temperature sensor circuit problem.
- Fuel-pressure problem.
- ECM/PCM control fault.
How to Diagnose P0213
1. Scan for Additional Codes
Use a professional scan tool and record all stored and pending codes. Pay particular attention to coolant-temperature, fuel-system, injector, voltage, and ECM/PCM codes.
Additional codes can help determine whether P0213 is an isolated injector problem or part of a larger cold-start control issue.
2. Check Engine Coolant Temperature Data
Before starting a cold engine, compare the scan-tool coolant-temperature reading with the actual ambient/engine temperature.
If the ECM believes the engine is already warm when it is actually cold, the cold-start strategy may be affected. This does not necessarily mean the temperature sensor itself is faulty; the wiring and connector must also be checked.
3. Inspect the Cold Start Injector
Inspect Cold Start Injector 1 and its connector for corrosion, contamination, loose terminals, broken locking tabs, damaged insulation, and evidence of fuel leakage.
4. Inspect the Fuse Box
Check the applicable injector or engine-control fuse and relay where fitted.
The fuse may be identified by abbreviations such as INJ, EFI, ECM, PCM, ECU, ENG, FUEL, or another manufacturer-specific designation.
Fuse numbers and locations are vehicle-specific. Always use the correct fuse-box diagram and wiring diagram for the vehicle.
If the fuse is blown, determine why it failed before replacing it repeatedly.
5. Check Injector Power Supply
Using the vehicle-specific wiring diagram, verify the power supply to the cold-start injector under the manufacturer's specified test conditions.
Do not assume that every cold-start injector uses the same power or ground arrangement.
6. Test the Injector
Where manufacturer procedures permit, measure injector resistance and compare it with the specification for that particular injector.
An injector that is electrically open or has abnormal resistance may require replacement, but resistance alone does not prove that the injector is mechanically functioning correctly.
7. Test Wiring and Control Circuit
Check continuity, resistance, voltage drop, and possible short circuits between the injector and ECM/PCM.
Pay particular attention to wiring near hot engine components and areas where the harness can rub against brackets or other components.
8. Verify ECM/PCM Control
If the injector, fuse, power supply, connector, and wiring test correctly, verify the ECM/PCM control signal using the manufacturer's diagnostic procedure.
Do not replace the ECM/PCM simply because P0213 is present.
P0213 Diagnostic Signal Flow
↓
Fuse / Relay / Power Distribution
↓
Cold Start Injector 1
↓
Injector Control Circuit
↓
ECM / PCM
↓
Cold-Start Fuel Enrichment
↓
Cold Engine Combustion
P0213 Live Data Diagnosis
Advanced scan tools can provide useful information when diagnosing P0213. Depending on the vehicle, monitor:
- Engine coolant temperature (ECT).
- Intake air temperature (IAT).
- Engine RPM during cranking.
- Battery voltage during cranking.
- Fuel pressure.
- Short-term fuel trim.
- Long-term fuel trim.
- Injector-related parameters.
- Engine load.
- Cold-start enrichment commands where available.
A particularly useful check is comparing the ECT reading before the first cold start with the actual ambient temperature. A large discrepancy can indicate a temperature-input problem that may affect cold-start fueling.
P0213 Oscilloscope Testing
An oscilloscope can be used to examine the electrical control signal to Cold Start Injector 1 where the circuit and vehicle design permit this test.
Simplified Injector Control
Power Supply
│
▼
Cold Start Injector
│
▼
ECM / PCM Driver
│
▼
Control Pulse
┌───────┐
──────┘ └────────
Injector
command
The exact waveform, voltage, pulse width, and control strategy vary by vehicle and injector type. Compare the waveform with manufacturer specifications or a known-good circuit rather than applying a universal waveform value.
Can a Bad Temperature Sensor Cause P0213?
It can contribute to a cold-start problem, but a temperature-sensor fault and a cold-start injector circuit fault are not the same thing.
If the ECT signal incorrectly indicates that the engine is warm, the ECM/PCM may change its cold-start fueling strategy. Therefore, ECT live data should be checked when diagnosing P0213.
Can a Fuse Cause P0213?
Yes. On systems where the cold-start injector receives power through a dedicated or shared fuse, a blown fuse or poor fuse-box connection can interrupt injector operation.
If other injector or engine-control functions are also affected, investigate the common power supply before replacing the injector.
Is P0213 Serious?
P0213 is usually most noticeable during cold starting. The engine may still run normally once it starts and reaches operating temperature, depending on the system.
However, repeated hard starting, stalling, or an incorrect fuel mixture should not be ignored because the underlying problem can affect drivability and emissions.
Can I Drive With P0213?
If the engine starts and runs normally after starting, limited driving may be possible. However, the problem should be diagnosed because cold-start problems can become worse in low temperatures.
If the engine repeatedly stalls, is difficult to start, or exhibits severe drivability problems, repair should be performed before relying on the vehicle.
P0213 Repair Cost
- Electrical diagnosis: approximately $50–$150+.
- Wiring repair: approximately $50–$250+.
- Connector repair: approximately $50–$200+.
- Cold-start injector replacement: approximately $100–$400+.
- Fuse/relay or power-circuit repair: approximately $50–$200+.
- Temperature sensor repair: approximately $50–$250+ depending on the vehicle.
- ECM/PCM diagnosis or repair: potentially considerably more.
These are general estimates. Actual costs depend on the vehicle, parts, labor rate, accessibility, and underlying cause.
Common Repair Mistakes
- Replacing the cold-start injector without testing the circuit.
- Ignoring the ECT live-data reading.
- Failing to inspect the fuse box.
- Assuming the same fuse designation applies to every vehicle.
- Ignoring connector corrosion.
- Testing continuity without checking voltage drop.
- Replacing the ECM/PCM before proving a driver fault.
- Using generic electrical specifications instead of manufacturer specifications.
- Ignoring fuel pressure when diagnosing a cold-start problem.
Related Codes
- P0200 – Injector Circuit Malfunction.
- P0201 – Injector Circuit/Open Cylinder 1.
- P0202 – Injector Circuit/Open Cylinder 2.
- P0203 – Injector Circuit/Open Cylinder 3.
- P0204 – Injector Circuit/Open Cylinder 4.
- P0205 – Injector Circuit/Open Cylinder 5.
- P0206 – Injector Circuit/Open Cylinder 6.
- P0207 – Injector Circuit/Open Cylinder 7.
- P0208 – Injector Circuit/Open Cylinder 8.
- P0209 – Injector Circuit/Open Cylinder 9.
- P0210 – Injector Circuit/Open Cylinder 10.
- P0211 – Injector Circuit/Open Cylinder 11.
- P0115–P0119 – Engine Coolant Temperature Sensor/Circuit Codes.
FAQ About P0213
What does P0213 mean?
P0213 means Cold Start Injector 1 Malfunction. It indicates a detected problem involving the first cold-start injector or its associated electrical/control system.
What is a cold-start injector?
A cold-start injector is a fuel injector used by certain engine designs to provide additional fuel during cold starting. Many modern engines do not use a separate cold-start injector.
Can P0213 cause hard starting?
Yes. If the vehicle relies on Cold Start Injector 1 for additional cold-start fuel, a malfunction can result in extended cranking, rough starting, hesitation, or stalling when the engine is cold.
Can P0213 be caused by the fuse box?
Yes. A blown fuse, poor fuse contact, or power-distribution problem can interrupt the cold-start injector circuit on systems that use a fused power supply.
Does P0213 mean the injector must be replaced?
No. The injector, connector, wiring, fuse, power supply, control circuit, and relevant temperature inputs should be tested before replacing the injector.
Can low battery voltage cause cold-start problems?
Low voltage during cranking can affect engine-control operation and injector control. Battery voltage during cranking should therefore be checked when diagnosing difficult cold starts.
What should I check first for P0213?
Start by confirming the code, checking for related DTCs, verifying the engine's cold-start system, checking ECT live data, inspecting the injector connector and wiring, and checking the applicable fuse and power supply.
Final Takeaway
P0213 is a generic OBD-II code for Cold Start Injector 1 Malfunction. It is different from the cylinder-specific injector codes P0201–P0212.
The best diagnosis combines scan-tool live data, fuse-box inspection, injector electrical testing, wiring checks, power/ground testing, and control-signal analysis.
Because cold-start systems vary substantially between manufacturers and many modern engines do not use a separate cold-start injector, always confirm the exact vehicle, engine configuration, wiring diagram, and manufacturer diagnostic procedure before replacing parts.