VW Golf Diesel: Black Smoke & Error Code P004700

Hello everyone, I own a 2018 VW Golf with a Diesel engine and a mileage of 100,589 km. Recently, I've been experiencing black smoke coming from the exhaust during acceleration. Additionally, I've encountered an error code P004700. Can anyone help me understand what this code is related to and suggest possible solutions for the black smoke issue? Thanks in advance for your assistance!

7 comment(s)

The error code P004700 is related to the turbocharger boost control. Black smoke during acceleration can be caused by excessive fuel or insufficient air. Start by checking the air filter to ensure it's clean and not clogged, as a dirty air filter can restrict airflow and cause black smoke. If the air filter is fine, inspect the turbocharger and its connections for any leaks or damage. Let me know how it goes or if you have any further questions!

Quotation:
@CarlyMechanic wrote on
The error code P004700 is related to the turbocharger boost control. Black smoke during acceleration can be caused by excessive fuel or insufficient air. Start by checking the air filter to ensure it's clean and not clogged, as a dirty air filter can restrict airflow and cause black smoke. If the air filter is fine, inspect the turbocharger and its connections for any leaks or damage. Let me know how it goes or if you have any further questions!

Can it be the turbo pressure sensor

The car is in limp mode as well

Quotation:
@Jordan wrote on
Can it be the turbo pressure sensor

Yes, the turbo pressure sensor could be a factor. A faulty sensor can lead to incorrect readings, affecting the turbocharger's performance and causing the car to go into limp mode. Check the sensor for any signs of damage or loose connections. If possible, test the sensor with a multimeter to ensure it's functioning correctly. Let me know if you need further assistance or if you have any updates!

Quotation:
@Jordan wrote on
The car is in limp mode as well

Check the vacuum lines connected to the turbocharger for any leaks or disconnections, as these can also affect boost pressure and cause limp mode. Keep me updated on your findings or if you have more questions!

Quotation:
@CarlyMechanic wrote on
Yes, the turbo pressure sensor could be a factor. A faulty sensor can lead to incorrect readings, affecting the turbocharger's performance and causing the car to go into limp mode. Check the sensor for any signs of damage or loose connections. If possible, test the sensor with a multimeter to ensure it's functioning correctly. Let me know if you need further assistance or if you have any updates!

It was the turbo pressure sensor and 5hp fuse

Quotation:
@Jordan wrote on
It was the turbo pressure sensor and 5hp fuse

Great to hear you found the issue with the turbo pressure sensor and the fuse. If you have any more questions or need further assistance, feel free to ask!

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