What is a rocker arm actuator system?
The rocker arm actuator is an oil pressure switch which controls the flow of oil to critical upper engine cylinder head components. The actuator will measure how much oil is flowing through it and report it to the ECM. The ECM will administer changes where it sees fit.
What does a’a’rocker arm actuator system mean?
‘A’ Rocker Arm Actuator System Performance or Stuck Off Bank 1 What the P2646 code means P2646 is an OBD-II generic code for the engine control module (ECM) detecting the ‘A’ rocker arm actuator control circuit for bank 1 has a performance problem or is stuck in the off position.
What does it mean when your rocker arm is stuck?
The P2646 code indicates the problem with the rocker arm actuator which means either the actuator is not working properly or it is stuck in the off position. Bank 1 in the definition indicates the engine side where the cylinder 1 is present and the letter ‘A’ indicates the Intake camshaft.
What is the diagnostic trouble code for rocker arm?
P2646 is a diagnostic trouble code (DTC) for “‘A’ Rocker Arm Actuator System Performance / Stuck Off Bank 1”.
How does the VTEC system control the rocker arm?
The VTEC system controls the rocker arm control solenoid through the powertrain control module (PCM). The PCM uses the rocker arm oil pressure switch to monitor and verify the oil pressure so the variable timing mechanism can be properly activated.
When is a rocker arm actuator stuck on?
If the PCM detects a level of resistance from the rocker arm actuator circuit indicating that it is stuck in the on (valve open) position, a code P2647 will be stored and a malfunction indicator lamp may be illuminated. What are the common causes of code P2647? What are the symptoms of code P2647? How do you troubleshoot code P2647?
P2646 is a diagnostic trouble code (DTC) for “‘A’ Rocker Arm Actuator System Performance / Stuck Off Bank 1”.
What does DTC stand for in rocker arm actuator?
DTC P2646 is defined as “Rocker Arm Actuator A, Bank 1, Performance or Stuck Off.” Honda, Acura, and a couple other automakers use this definition.
The VTEC system controls the rocker arm control solenoid through the powertrain control module (PCM). The PCM uses the rocker arm oil pressure switch to monitor and verify the oil pressure so the variable timing mechanism can be properly activated.