BMW DTC P3402 – Cylinder 1 Deactivation/Intake Valve Control Circuit Performance
DTC P3402 meaning on BMW
The Diagnostic Trouble Code (DTC) P3402 for BMW indicates an issue with the Cylinder 1 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 1 of the engine.
BMW DTC P3402 symptoms
Symptoms of BMW DTC P3402 may include:
- Check Engine Light illuminated
- Engine misfires
- Reduced engine performance
- Engine stalling
BMW DTC P3402 causes
Common causes of BMW DTC P3402 include:
- Faulty intake valve control solenoid
- Wiring issues in the intake valve control circuit
- Defective engine control module (ECM)
- Mechanical issues with the intake valve
BMW DTC P3402 seriousness
Ignoring BMW DTC P3402 can lead to:
- Reduced fuel efficiency
- Potential engine damage
- Increased emissions
- Further engine performance issues
How to diagnose DTC P3402 on BMW
To diagnose BMW DTC P3402, you can:
- Use a diagnostic scanner to retrieve the fault codes
- Inspect the intake valve control solenoid and wiring for any visible damage
- Perform a circuit test to check for continuity and proper voltage
- Check the intake valve operation and mechanical condition
How to fix DTC P3402 on BMW
To fix BMW DTC P3402, you may need to:
- Replace the faulty intake valve control solenoid
- Repair any damaged wiring in the control circuit
- Reset the engine control module (ECM) and clear the fault codes
- Perform a test drive to ensure the issue is resolved
How to erase DTC P3402 on BMW
To erase BMW DTC P3402, you can:
- Use a diagnostic scanner to clear the fault codes
- Disconnect the battery for a few minutes to reset the ECM
- Ensure the underlying issue causing the fault code has been addressed
- Verify that the Check Engine Light is no longer illuminated