P1048 – BMW DTC

BMW DTC P1048 – VVL-Control Circuit Low (Bank 1)

DTC P1048 meaning on BMW

DTC P1048 for BMW refers to a fault in the Variable Valve Lift (VVL) control circuit on Bank 1. This fault code indicates that the VVL system is not functioning within the expected parameters, specifically on the bank 1 side of the engine.

BMW DTC P1048 symptoms

Symptoms of DTC P1048 on a BMW may include:

• Check Engine Light (CEL) illuminated on the dashboard
• Reduced engine performance or power
• Engine running rough or misfiring
• Increased fuel consumption

BMW DTC P1048 causes

The common causes of DTC P1048 on a BMW include:

• Faulty Variable Valve Lift (VVL) control solenoid
• Wiring or connector issues in the VVL control circuit
• Low engine oil level or poor oil quality
• Mechanical issues with the VVL system components

BMW DTC P1048 seriousness

DTC P1048 should not be ignored as it can lead to potential engine performance issues and may cause further damage if not addressed promptly. It is recommended to diagnose and fix the underlying problem to prevent any long-term consequences.

How to diagnose DTC P1048 on BMW

To diagnose DTC P1048 on a BMW, you can follow these steps:

1. Use a diagnostic scanner to retrieve the fault code and any related codes
2. Inspect the VVL control solenoid and wiring for any visible damage or corrosion
3. Check the engine oil level and quality
4. Perform a visual inspection of the VVL system components for any signs of wear or damage

How to fix DTC P1048 on BMW

To fix DTC P1048 on a BMW, you can try the following:

1. Replace the faulty Variable Valve Lift (VVL) control solenoid
2. Repair or replace any damaged wiring or connectors in the VVL control circuit
3. Ensure the engine oil level is correct and of good quality
4. If mechanical issues are found, repair or replace the affected VVL system components

How to erase DTC P1048 on BMW

To erase DTC P1048 on a BMW, you can use a diagnostic scanner to clear the fault code from the vehicle’s memory. After fixing the underlying issue causing the fault code, you can then reset the Check Engine Light and verify that the code does not return.

Recommended tools & DTC Scanners for BMW

Best Diagnostic App for modern BMWs: BimmerLink

Recommended Bluetooth adapter for Bimmerlink: OBDLink CX

Cable adapter for Bimmerlink: Enet Cable USB Type C

For older BMWs we recommend: Autel AutoLink AL319 (2024 version)

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

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