P0665 – BMW DTC

BMW DTC P0665 – Intake Manifold Tuning Valve Control Circuit High (Bank 2)

DTC P0665 meaning on BMW

DTC P0665 on a BMW indicates an issue with the intake manifold tuning valve control circuit on Bank 2. This fault code is triggered when the Engine Control Module (ECM) detects a high voltage condition in the circuit controlling the intake manifold tuning valve on Bank 2.

BMW DTC P0665 symptoms

Symptoms of DTC P0665 on a BMW may include:

• Check Engine Light illuminated on the dashboard
• Reduced engine performance
• Engine stalling or rough idling
• Decreased fuel efficiency

BMW DTC P0665 causes

The common causes of DTC P0665 on a BMW include:

• Faulty intake manifold tuning valve
• Wiring or connector issues in the intake manifold tuning valve control circuit
• ECM software or hardware problems

BMW DTC P0665 seriousness

While DTC P0665 may not cause immediate drivability issues, it can lead to reduced engine performance and fuel efficiency if left unresolved. Ignoring this fault code may result in further damage to engine components over time.

How to diagnose DTC P0665 on BMW

To diagnose DTC P0665 on a BMW, follow these steps:

1. Use a diagnostic scanner to retrieve the fault code and freeze frame data
2. Inspect the wiring and connectors in the intake manifold tuning valve control circuit
3. Test the intake manifold tuning valve for proper operation
4. Check for any ECM software updates or reprogramming

How to fix DTC P0665 on BMW

To fix DTC P0665 on a BMW, consider the following:

1. Replace the faulty intake manifold tuning valve
2. Repair any damaged wiring or connectors in the control circuit
3. If necessary, reprogram or replace the ECM

How to erase DTC P0665 on BMW

To erase DTC P0665 on a BMW, you can use a diagnostic scanner to clear the fault code from the ECM’s memory. After fixing the underlying issue causing the fault code, clearing it from the system will reset the Check Engine Light.

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

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.