P0206 OBD Error Code: Problem & Solutions

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Is your car engine misfiring and having delayed start up? Is there black smoke emitting from the car exhaust? Is there a sudden drop in the fuel economy? All these are the indications to the OBD Code P0206 being stored and flashed in the Powertrain Control Module (PCM).

OBD code P0206 is defined as Cylinder 6 Fuel Injector Circuit Malfunction Error.

The PCM constantly monitor and instructs the fuel injector to provide fuel to maintain an optimal air to fuel ratio in the engine for the proper combustion process and attain maximum output and fuel economy. If the PCM sees the voltage levels going too high or low as well as resistance out of range, the OBD code gets set for that particular fuel injector of a particular cylinder, which in this case is Cylinder 6, thus storing P0206 error code.

 

After the code is set, the vehicle may also go into failsafe mode and will only return to normal operations after the problem is completely solved.

 

What causes the problem of Cylinder 6 Injector Circuit Malfunction?

• Fuel pump fault/failure
• Fuel injector cylinder 6 fault/failure
• PCM (Powertrain Control Module) faulty
• Faulty fuel pressure sensor
• Electric fuel pressure regulator faulty
• Fuel filter or other parts of the fuel system clogged/restricted
• Damaged wiring such as a short to ground
• Fuel tank low fuel levels

1. Fuel Injection - The fuel injection system works by pressurising and injecting the fuel, the system forces it into air that has been compressed to high pressure in the combustion chamber. Replace faulty fuel injectors and parts as it affects the combustion process and the performance output.
2. Diagnostic Tools - Use factory grade OBD scan tools to diagnose an OBD code error problem. Buy quality diagnostic tools from us now!
3. Powertrain Control Module - Although this error is rare, but check for faulty PCM and if it requires reprogramming or not. Find quality components from us.
4. Carburetor Kits - If the carburetor is problematic, it will hamper the engine performance. Replace faulty components now!

P0206 is considered severe since excessive fuel pressure may lead to a variety of drivability issues and cause internal engine and fuel delivery system damages.

 

Common Symptoms

 

• Delayed cold start and decreased engine performance
• Black smoke emission from the exhaust system
• Affected fuel efficiency
• Engine Misfires codes stored
• Rough idle and reduced throttle response

Replacing the following components can solve P0206 error code.

 

• Replacement of Fuel pressure regulator
• Replacement of Fuel pump
• Replacement of Fuel filter
• Replacement of faulty fuel injectors or other fuel system related sensors
• Repairing or replacing electrical wiring or connectors
• Replacement of Faulty fuel pump relay
• Removal of defective fuel pump relay
• Installation of new fuel pump relay
• Testing the fuel pressure and codes cleared with a scanner or gauge

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A mechanic may start with a good visual inspection of the fuel system and the associated components like fuel tank, fuel pump, fuel filter, lines and hoses, electrical wiring & connectors, sensors and injectors.

 

Examine other problematic parts of your vehicle's fuel injector cylinder 6 and replace them if needed. If the voltage reading is too high or low, suspect for a faulty injector and replace it immediately.

The injector circuit should also be tested for faulty connection or problems and should be resolved immediately.

 

During an inspection, make note of any damages to the system and repair them before proceeding with the diagnosis.

 

After performing the visual inspection, perform a fuel pressure test to test the functionality of all fuel system sensors.

 

If all the parts are checked for perfect operation, then suspect for faults in the Powertrain Control Module (PCM). Although, this error is rare but faulty components should be repaired or replaced and the system should be reprogrammed for eliminating any error.

 

Common Mistakes When Diagnosing The P0206 Code

 

Sometimes, mechanics will see a trouble code and take that for what is actually wrong with the car. Just because a particular part is mentioned in a trouble code, it does not mean that the part is faulty.

 

Always check for the following components as well while diagnosing this OBD code error P0206.

 

• Damaged or contaminated spark plug
• Engine sensor failure
• Exhaust leak
• Fuel injector failure
• Fuel pump failure
• Internal engine failure
• Powertrain Control Module (PCM) software needs to be updated
• The fuel does not meet the manufacturer's requirements