P3455 – BMW DTC

BMW DTC P3455 – Cylinder 7 Exhaust Valve Control Circuit Low

DTC P3455 meaning on BMW

DTC P3455 on a BMW indicates a fault with the Cylinder 7 Exhaust Valve Control Circuit being detected as low. This means that the Engine Control Module (ECM) has detected a lower than expected voltage signal from the exhaust valve control circuit of cylinder 7.

BMW DTC P3455 symptoms

Symptoms of DTC P3455 on a BMW may include:

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

BMW DTC P3455 causes

Common causes of DTC P3455 on a BMW include:

• Faulty exhaust valve control solenoid
• Wiring issues in the exhaust valve control circuit
• ECM software issues
• Mechanical problem with the exhaust valve

BMW DTC P3455 seriousness

DTC P3455 should not be ignored as it can lead to poor engine performance and potential damage if left unresolved. It is recommended to address this issue promptly to prevent further complications.

How to diagnose DTC P3455 on BMW

To diagnose DTC P3455 on a BMW, you can follow these steps:

1. Use a diagnostic scanner to retrieve the fault codes and freeze frame data
2. Inspect the wiring and connectors in the exhaust valve control circuit
3. Test the exhaust valve control solenoid for proper operation
4. Check the exhaust valve for any mechanical issues

How to fix DTC P3455 on BMW

To fix DTC P3455 on a BMW, you can try the following:

1. Replace the faulty exhaust valve control solenoid
2. Repair any damaged wiring or connectors in the circuit
3. If the issue persists, consult a professional mechanic for further diagnosis

How to erase DTC P3455 on BMW

To erase DTC P3455 on a BMW, you can:

1. Use a diagnostic scanner to clear the fault codes
2. After fixing the underlying issue, drive the vehicle to allow the ECM to run its self-tests
3. If the fault does not reoccur, the DTC should be automatically erased

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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