P3445 – BMW DTC

BMW DTC P3445 – Cylinder 6 Exhaust Valve Control Circuit/Open

DTC P3445 meaning on BMW

The Diagnostic Trouble Code (DTC) P3445 for BMW indicates a malfunction in the Cylinder 6 Exhaust Valve Control Circuit, specifically an open circuit. This means that the Engine Control Module (ECM) has detected a lack of continuity or a break in the electrical circuit that controls the exhaust valve in cylinder 6.

BMW DTC P3445 symptoms

Symptoms associated with DTC P3445 on a BMW may include:

• Check Engine Light (MIL) illuminated
• Engine running rough or misfiring
• Reduced engine performance
• In some cases, there may be no noticeable symptoms

BMW DTC P3445 causes

The potential causes of DTC P3445 on a BMW include:

• Faulty exhaust valve control solenoid
• Open or short circuit in the wiring harness
• Corrosion or poor connections in the electrical connectors
• Defective Engine Control Module (ECM)

BMW DTC P3445 seriousness

While DTC P3445 may not always result in immediate drivability issues, it is important to address this fault promptly. Ignoring the issue can lead to potential engine damage, reduced fuel efficiency, and increased emissions.

How to diagnose DTC P3445 on BMW

To diagnose DTC P3445 on a BMW, a mechanic would typically perform the following steps:

1. Use a diagnostic scanner to retrieve the fault code and related data
2. Inspect the wiring harness for any visible damage or corrosion
3. Check the exhaust valve control solenoid for proper operation
4. Test the continuity of the circuit using a multimeter
5. Inspect the electrical connectors for any signs of poor connection

How to fix DTC P3445 on BMW

Depending on the root cause of DTC P3445, the following steps may be taken to fix the issue on a BMW:

• Replace the faulty exhaust valve control solenoid
• Repair or replace any damaged wiring in the circuit
• Clean or replace corroded electrical connectors
• If necessary, replace the Engine Control Module (ECM)

How to erase DTC P3445 on BMW

After the underlying issue causing DTC P3445 has been resolved, the fault code can be cleared from the ECM using a diagnostic scanner. This will turn off the Check Engine Light and reset the system for a fresh start.

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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