P0267 Fault Code

Cylinder #3 Injector Circuit Low

• What does that mean?
• Symptoms
• Causes
• Solutions

The P0267 fault code refers to a problem with the injector circuit in cylinder #3 of a vehicle's engine. This code indicates that there is a low voltage or resistance issue with the fuel injector circuit for cylinder #3.

Possible causes of this fault code include:

1. Faulty injector: The fuel injector in cylinder #3 may be malfunctioning or clogged, causing a low voltage or resistance reading.

2. Wiring or connection issues: There may be a problem with the wiring or connections related to the fuel injector in cylinder #3. This could include a short circuit, open circuit, or loose connection.

3. ECM (Engine Control Module) problem: The ECM, which controls the fuel injection system, may be faulty and not properly sending signals to the injector circuit in cylinder #3.

To resolve the P0267 fault code, several steps can be taken:

1. Check the wiring and connections: Inspect the wiring harness and connectors related to the fuel injector in cylinder #3. Look for any signs of damage, loose connections, or corrosion and repair as necessary.

2. Test the injector: Perform a manual test on the fuel injector in cylinder #3 to check for proper function and ensure it is not clogged. If necessary, clean or replace the injector.

3. Test the ECM: Diagnostic equipment can be used to test the ECM and verify if it is functioning correctly. If a faulty ECM is detected, it may need to be repaired or replaced.

Once the issue has been identified and repaired, the fault code should be cleared from the vehicle's computer system. If the problem persists after these steps, it is recommended to consult a qualified mechanic for further diagnosis and repair.

What are the symptoms of the P0267 code?

The P0267 fault code refers to Cylinder #3 Injector Circuit Low. Some possible symptoms of this fault code include:

• Engine misfire or rough idle
• Decreased engine performance
• Engine hesitation or stalling
• Increased fuel consumption
• Check Engine Light (CEL) illuminated on the dashboard.

Please note that these symptoms may vary depending on the specific vehicle make and model. It is always recommended to consult a professional mechanic or dealership for an accurate diagnosis and repair.

What causes the P0267 code?

The P0267 fault code indicates a problem with the cylinder #3 injector circuit being too low. This can be caused by various issues, including:

1. Faulty fuel injector: The injector itself may be malfunctioning, causing low fuel flow to the cylinder.

2. Wiring or connector issues: There could be a problem with the wiring or connectors related to the cylinder #3 injector, such as loose connections or damaged wires.

3. Fuel delivery problem: Issues with the fuel pump, fuel filter, or fuel pressure regulator can lead to low fuel delivery to the cylinder.

4. Engine control module (ECM) malfunction: The ECM controls the fuel injection process, and if it is not functioning correctly, it may not command the injector to provide enough fuel to the cylinder.

5. Faulty sensor: A malfunctioning sensor that provides input to the ECM, such as the crankshaft position sensor or oxygen sensor, can cause incorrect fuel injection.

To determine the exact cause of the P0267 fault code, it is recommended to diagnose the vehicle using a suitable scan tool and perform further tests and inspections as necessary.

How to fix P0267?

To fix the P0267 fault code, which indicates a low circuit in cylinder #3 injector, you can follow these steps:

1. Check the wiring: Inspect the wiring harness and connectors related to the #3 injector circuit. Look for any loose connections, frayed wires, or damaged insulation. Repair or replace any faulty wiring.

2. Test the injector resistance: Use a multimeter to measure the resistance of the #3 injector. Compare the reading to the manufacturer's specifications. If the resistance is out of range, replace the injector.

3. Check the voltage signal: Use a scan tool to monitor the voltage signal sent from the engine control module (ECM) to the #3 injector. Check for any fluctuations or abnormalities in the signal. If the voltage is inconsistent or weak, there may be an issue with the ECM.

4. Inspect the fuel system: Check the fuel pressure and fuel delivery to the #3 injector. Ensure that there are no clogs or restrictions in the fuel lines or injectors. Clean or replace any components as needed.

5. Test the ECM: If all else fails, consider testing or replacing the ECM. An issue with the ECM could be causing the low circuit in the #3 injector. Consult a professional mechanic or your vehicle's service manual for guidance.

Please note that these steps are general guidelines and may vary depending on the make and model of your car. If you're not familiar with automotive repairs, it's recommended to seek assistance from a certified mechanic for a proper diagnosis and repair.