Valve Pause System Stuck Off Bank 1
Table of contents
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
How do I fix code P3400 ACURA?
Check the “Possible Causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector’s pins.
Cost of diagnosing the P3400 ACURA code
The cost of diagnosing the P3400 ACURA code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle’s make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.
When is the code detected
If there is a difference between the oil pressure conditions in the hydraulic circuit that are determined by the PCM command and the oil pressure conditions that are determined by the status of the front or rear rocker arm oil pressure switches, the system is considered faulty and the DTC is stored.
Possible Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
- Engine vibration
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.