P0248 – OBD-II DTC

OBD-II DTC P0248 – Turbocharger Wastegate Solenoid B Malfunction

DTC P0248 meaning

DTC P0248 refers to a malfunction in the Turbocharger Wastegate Solenoid B. The wastegate solenoid is responsible for controlling the flow of exhaust gases to the turbocharger, which in turn regulates boost pressure. When the Engine Control Module (ECM) detects an issue with the solenoid’s performance or circuit, it triggers this diagnostic trouble code (DTC).

DTC P0248 symptoms

Common symptoms associated with DTC P0248 may include:

• Reduced engine power or performance
• Increased turbo lag
• Check Engine Light (CEL) illuminated
• Unusual engine noises, such as hissing or whistling
• Poor fuel economy

DTC P0248 causes

Several factors can lead to the triggering of DTC P0248, including:

• Faulty wastegate solenoid B
• Wiring issues, such as shorts or open circuits
• Corroded or loose electrical connectors
• Vacuum leaks affecting the wastegate operation
• Faulty ECM or software issues

DTC P0248 seriousness

The seriousness of DTC P0248 can vary based on the symptoms and the vehicle’s performance. While it may not cause immediate engine damage, it can lead to:

• Decreased engine efficiency
• Increased emissions
• Potential long-term damage to the turbocharger

It is advisable to address this code promptly to avoid further complications.

How to diagnose DTC P0248

To diagnose DTC P0248, follow these steps:

1. Use an OBD-II scanner to confirm the presence of the code.
2. Inspect the wiring and connectors related to the wastegate solenoid for damage or corrosion.
3. Check the operation of the wastegate solenoid using a multimeter.
4. Test for vacuum leaks in the system.
5. Examine the ECM for any software updates or faults.

How to fix DTC P0248 step-by-step instructions

To fix DTC P0248, follow these steps:

1. Repair or replace any damaged wiring or connectors associated with the wastegate solenoid.
2. If the wastegate solenoid is faulty, replace it with a new one.
3. Address any vacuum leaks found during diagnosis.
4. Clear any fault codes using an OBD-II scanner.
5. Test drive the vehicle to ensure the issue is resolved and the Check Engine Light does not reappear.

How to erase DTC P0248

To erase DTC P0248, follow these steps:

1. Connect an OBD-II scanner to the vehicle’s diagnostic port.
2. Turn on the ignition without starting the engine.
3. Navigate to the “Erase Codes” or “Clear Codes” option on the scanner.
4. Confirm the action to clear the DTC.
5. Disconnect the scanner and start the engine to verify that the code does not return.

Recommended tools for OBD-II diagnostics

Explore our expert picks: The Best OBD2 Scanners for 2025

Easy-to-use Multimeter for reliable diagnostics: AstroAI Auto-ranging Multimeter

Some of the links on this page may be affiliate links, which means we may earn a small commission if you make a purchase. This helps us keep our DTC database up to date and provide valuable content for free. We only recommend products that we have tested and believe to be the best in their class.