01795 DTC Code: Understanding and Troubleshooting


Have you ever encountered the 01795 Diagnostic Trouble Code (DTC) while dealing with your vehicle? Understanding what this code means and how to troubleshoot it can save you time and money. In this comprehensive guide, we will delve into the depths of the 01795 DTC code, providing you with a detailed explanation, troubleshooting tips, and frequently asked questions to ensure that you have a complete understanding of this specific fault code.

Understanding the 01795 DTC Code

The 01795 DTC code is a generic OBD-II fault code that indicates an issue related to the turbocharger boost control pressure sensor. When this code is present, it means that the engine control module (ECM) has detected a problem with the boost control pressure sensor signal, leading to potential performance issues.

Symptoms of the 01795 DTC Code

When the 01795 DTC code is triggered, you might experience various symptoms, including:

  1. Reduced engine power.
  2. A decrease in fuel efficiency.
  3. Rough or unstable idling.
  4. Engine misfire.
  5. Reduced acceleration.
  6. Illuminated Check Engine Light (CEL).

Causes of the 01795 DTC Code

Several factors can lead to the occurrence of the 01795 DTC code, with the most common causes being:

  1. Faulty or damaged turbocharger boost control pressure sensor.
  2. Loose or damaged wiring/connectors in the turbocharger system.
  3. A clogged intercooler or air intake system.
  4. Turbine wheel damage.
  5. Malfunctioning turbocharger wastegate.

Troubleshooting the 01795 DTC Code

Effectively troubleshooting the 01795 DTC code requires a systematic approach. Follow these steps to diagnose and address the issue effectively:

Step 1: Check for Other DTC Codes

Before focusing solely on the 01795 DTC code, it is important to check for any additional fault codes that might be present. This will provide a complete overview of the vehicle’s condition, enabling you to detect any underlying issues.

Step 2: Inspect Wiring and Connectors

Inspect the wiring and connectors associated with the turbocharger boost control pressure sensor. Look for any signs of damage, such as frayed wires or loose connections. Ensure that all connections are secure and repair or replace any faulty components if necessary.

Step 3: Verify Turbocharger Functionality

Conduct a thorough inspection of the turbocharger system, starting with the intercooler and the air intake system. Look for any obstructions or clogs that might impede the proper functioning of the turbocharger. Clean or replace any components as needed.

Step 4: Test the Turbocharger Boost Control Pressure Sensor

Using a multimeter, test the turbocharger boost control pressure sensor to ensure it is functioning correctly. Consult the vehicle’s service manual for specific instructions on how to perform this test accurately. If the sensor is faulty, it will need to be replaced.

Step 5: Check the Turbocharger Wastegate Operation

Inspect the turbocharger wastegate to ensure it opens and closes properly. A malfunctioning wastegate can cause abnormal boost pressure, triggering the 01795 DTC code. If necessary, repair or replace the wastegate mechanism.

Frequently Asked Questions

  1. Q: Can I continue driving with the 01795 DTC code? A: It is not recommended to drive with the 01795 DTC code present, as it can lead to decreased engine performance and potential damage. It is best to address the issue promptly.

  2. Q: How much does it cost to fix the 01795 DTC code? A: The cost of fixing the 01795 DTC code can vary depending on various factors, such as the underlying cause, the vehicle make and model, and labor rates. It is advisable to consult with a professional mechanic or dealership for an accurate estimation of the repair cost.

  3. Q: Can I reset the Check Engine Light (CEL) after fixing the 01795 DTC code? A: Yes, once the underlying issue triggering the 01795 DTC code has been resolved, it is possible to reset the Check Engine Light. This can be done using an OBD-II scanner or by disconnecting the battery for a few minutes. However, it is important to ensure that the issue is fully resolved before resetting the CEL.


By now, you should have a comprehensive understanding of the 01795 DTC code. Remember, addressing this fault code promptly and accurately will help to maintain your vehicle’s optimal performance and prevent further damage. If you encounter any difficulties during the troubleshooting process, it is always advisable to seek professional assistance from a qualified mechanic or dealership. Stay informed and proactive when it comes to maintaining the health of your vehicle.

About author


Meet Sam Mitchell, your experienced and reliable guide in the complex world of car fault codes. With a robust career spanning over 15 years as a professional car mechanic, John has the skills, knowledge, and practical experience to help you navigate car fault issues with confidence.


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