P0248 Fault Code

Turbocharger Wastegate Solenoid B Range/Performance

• What does that mean?
• Symptoms
• Causes
• Solutions

The P0248 fault code indicates an issue with the turbocharger wastegate solenoid B circuit, specifically a range/performance problem. The wastegate solenoid is responsible for controlling the amount of boost pressure that the turbocharger produces. If the solenoid B circuit is out of range or underperforming, it can lead to issues with engine performance, such as a lack of power or acceleration. To diagnose and fix the problem, a mechanic will typically check the wiring and connections of the wastegate solenoid circuit, as well as the solenoid itself to see if it needs to be replaced. In some cases, a faulty boost pressure sensor may also be the cause of the fault code. It's important to address this issue promptly to avoid any potential engine damage and ensure optimal vehicle performance.

What are the symptoms of the P0248 code?

Symptoms of P0248 fault code on car include:

• Check Engine Light is on
• Reduced engine power
• Poor acceleration
• Difficulty in maintaining speed
• Turbocharger not working efficiently
• Hissing sound from the turbocharger wastegate solenoid area.

What causes the P0248 code?

The P0248 fault code indicates a problem with the Turbocharger Wastegate Solenoid B Range/Performance. This means that the powertrain control module (PCM) is detecting an abnormal voltage or resistance in the solenoid circuit that controls the wastegate. The wastegate is responsible for regulating the turbocharger boost pressure and preventing over-boosting of the engine. An issue with the solenoid can cause inaccurate control of the wastegate, resulting in engine performance issues such as decreased power, poor acceleration and reduced fuel economy. Possible causes of this fault code include a failed wastegate solenoid, damaged wiring or connectors in the solenoid circuit, or a malfunctioning PCM. Proper diagnosis and repair of the underlying issue is necessary to resolve this fault code and restore optimal engine performance.

How to fix P0248?

To fix the P0248 fault code, you should take the following steps:

1. Check the wastegate solenoid B: Visually inspect the solenoid to make sure it is not damaged or leaking. Check electrical connections for any damage or corrosion. If all is well, move on to step 2.

2. Check the Turbocharger: Inspect the turbocharger for any damage or loose connections. Check for any signs of oil leakage, as this can indicate a damaged turbocharger. Replace or repair any damaged parts.

3. Check the vacuum hoses: Inspect all hoses leading to and from the wastegate solenoid for any damage, blockage, or leaks. Replace any damaged or worn hoses.

4. Check the wiring harness: Inspect the wiring harness for any damage or corrosion. Check for any loose or disconnected connectors. Repair or replace any damaged wiring.

5. Clear the diagnostic trouble codes (DTCs): Use an OBD-II scanner to clear the DTCs from the vehicle's computer. After clearing the codes, test drive the vehicle to see if the issue has been resolved.

If the issue persists, it may be best to take the vehicle to a qualified mechanic for further diagnosis and repair.