Error Code P050D: What It Means & What To Do?

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Do you know when your engine will experience a rough cold start? If your answer is No, then just give a read. A rough idle will be created if the PCM receives inaccurate engine temperature signal due to inadequate fuel delivery or wrong timing. There may be an ECT sensor code stored. You have to repair the ECT sensor related codes before diagnosing with P050D.

The idle RPM level is managed by the PCM (Powertrain Control Module). To complete this task, the intake airflow must be controlled during closed conditions of the throttle. With the help of an Idle air control (IAC) valve, the PCM will regulate the engine intake air during idle. If the air is sent into the engine, it will result in rough engine idle during cold start and P050D will be stored. Diagnose and repair other codes like lean exhaust or IAC related codes before proceeding with P050D code. Engine misfire can also be one of the reasons for idle start condition. If there are misfire codes, they must be diagnosed.

What causes this problem with Cold Start Rough Idle?

• Leaks in the vacuum or air intake regions
• Spark plugs, plug boots and ignition coils are very poor
• Fuel pressure / Volume is not sufficient
• Shorted ECT sensor or open circuit and damaged connectors

1. Spark Plugs - Does your engine misfire? Then it’s because of faulty spark plugs. Replace with new ones.
2. Plug Boots - Another reason for engine misfire is an ignition boot failure. Replace the faulty plug boots or fix the damages.
3. Ignition Coils - Ignition coil helps to transform the voltage as per the engine’s requirement. The component has to be replaced of there are damages.
4. Fuel Pressure Sensor - A good fuel pressure will rise to the required pressure level. If not the leaks or damages have to be repaired.
5. Circuits/connectors - Are there any shorted or open circuit? Is the connectors of your vehicle broke? Resolve the issue and get them fixed.

Interested in knowing the symptoms to OBD code P050D? If yes, then you have arrived at the right place. We at Parts Avatar have listed out few common symptoms associated with Cold Start Rough Idle.

Common Symptoms

• Cold Start while driving
• Other error Codes related to drivability
• The engine produces Hissing or Sucking Noise

Have a look at some ways with which you can correct the P050D code:

• If you want to accurately diagnose the P050D code, then you need the information of diagnostic flowcharts, wiring diagrams, connector face views, connector pinout charts, and component testing processes and conditions. Recover all the stored codes and freeze frame data where you have to connect the scanner to the diagnostic port of the vehicle. Write down this information as it can help with diagnostic process. Clear the codes, allow the engine to cool and test drive again. If the code is not returned and the PCM enters readily then there might be a broken code. Some you have to store the code and allow the engine to worsen before any diagnosis can be made. If the code appears soon, check the factors which impacts the cold start of the engine.

There is no need to get strained if your OBD Code is still flashing up as we are here at your service. Have a look at our superior variety of Air intake, Spark Plug, Plug Boots, Ignition Coil, Fuel Pressure Circuits or Connectors many more. Now all your problems would vanish within no time.

In order to diagnose the OBD error code P050D you have to follow a few steps as follows:

• If there is too much of air in the intake, when it requires a rich fuel mixture will create a rough idle. Check for leaky areas in the vacuum.
• There should be no cracks or damage in the vacuum hose and line.
• Check for hissing and sucking noise around the throttle body, Intake Manifold Gasket, Brake Booster and The PCV Valve.
• There should be no cracks or holes in the Air intake hose.
• Make sure that the IAC valve and seats are clean and free of debris as it plays an important role in cold start drivability.
• The carbon plate should be clean and carbon free. If the EGR valve is open there will be vacuum leak so it must be closed.

Common mistakes when diagnosing the P050D code

• Faulty Air intake heater
• Faulty engine coolant temperature sensor
• Circuits / connectors is Shorted or open