BMW DTC P3426 – Cylinder 4 Deactivation/Intake Valve Control Circuit Performance
DTC P3426 meaning on BMW
The Diagnostic Trouble Code (DTC) P3426 for BMW indicates an issue with the Cylinder 4 Deactivation/Intake Valve Control Circuit Performance. This means that there is a problem with the control circuit responsible for deactivating the intake valve in cylinder 4 of the engine.
BMW DTC P3426 symptoms
Symptoms of DTC P3426 on a BMW may include:
- Check Engine Light illuminated on the dashboard
- Engine running rough or misfiring
- Reduced engine performance or power
- In some cases, the vehicle may go into a reduced power mode
BMW DTC P3426 causes
Common causes of DTC P3426 on a BMW include:
- Faulty intake valve control solenoid
- Wiring or connector issues in the intake valve control circuit
- Engine mechanical problems affecting cylinder 4
- Software or calibration issues
BMW DTC P3426 seriousness
DTC P3426 should not be ignored as it can lead to engine performance issues and potential damage if left unresolved. It is recommended to address this issue promptly to prevent further complications.
How to diagnose DTC P3426 on BMW
To diagnose DTC P3426 on a BMW, a mechanic may perform the following steps:
- Use a diagnostic scanner to retrieve the fault code and related data
- Inspect the intake valve control solenoid and its wiring for any visible damage
- Check the intake valve operation in cylinder 4
- Perform a thorough inspection of the intake valve control circuit for any faults
How to fix DTC P3426 on BMW
To fix DTC P3426 on a BMW, the following steps may be taken:
- Replace the faulty intake valve control solenoid if necessary
- Repair any damaged wiring or connectors in the intake valve control circuit
- Address any engine mechanical issues affecting cylinder 4
- Update software or perform calibration as needed
How to erase DTC P3426 on BMW
To erase DTC P3426 on a BMW, the fault code can be cleared using a diagnostic scanner. After the underlying issue has been addressed and fixed, the code can be cleared to reset the Check Engine Light and ensure that the repair was successful.
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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