P3400 ACURA – Valve Pause System Stuck Off Bank 1

 

P3400: DIY Repairing Video Tutorial

https://youtu.be/brgXcnIucW8

Check out nonda Auto DIY Center for more engine error code repairing videos.
https://www.youtube.com/playlist?list=PL-Lyko0O0oxHe1AGvzwAz-wokJPXAtW97

 

P3400 ACURA Possible Symptoms

  Engine Light ON (or Service Engine Soon Warning Light),Engine vibration  

P3400 ACURA Possible Causes

  Low engine oil level,Faulty Rocker Arm Oil Control Solenoid,Faulty EOP (Engine Oil Pressure) sensor,Incorrect oil type used,Engine mechanical condition  

P3400 ACURA Description

  The Variable Cylinder Management (VCM) system activates the rocker arm oil control solenoid A (Bank 1), B (Bank 1), and A (Bank 2) by commands from the Powertrain Control Module (PCM), and the appropriate solenoid charges/discharges the hydraulic circuit of the cylinder pause VTEC system that pauses the intake and exhaust valves on the front and rear banks. The PCM monitors oil pressure in the hydraulic circuit of the VTEC mechanism using the front of rear rocker arm oil pressure switches downstream of the rocker arm oil control solenoids.