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P2646 07 honda odyssey full#
P2646 07 honda odyssey code#

P2646 07 honda odyssey code#

The vehicles that have variable rockers that use this code are known to get this code when the engine gets sludged up from lack of oil changes at the proper interval, or if the oil is too thick of a viscosity and does not flow properly through the small passages as required.

Flush the engine passages of sludge from lack of oil changesĪdditional comments for consideration regarding the P2646 codeĬode P2646 is not a very common code since most vehicles do not have actuators for the rocker arms of the engines they manufacture.

Changing the oil and filter to the correct viscosity oil.

Repairing the wiring harness or connector to the actuator.

When the system is not working correctly, the rocker arms are not moving to the different position causing a low power situation.

Failing to identify that incorrect oil viscosity is being used causing the codeĬode P2646 is a code for the 'A' rocker arm control circuit performance problem.

Failing to clear the ECM codes after the system is repaired.

Replacing the actuator without verifying the actuator is the cause of the problem.

Performs the manufacturer pinpoint test on the 'A' rocker arm actuator system since testing may be different between applications and manufacturersĬommon mistakes when diagnosing the P2646 code?.

P2646 07 honda odyssey full#

Verifies the oil is full of the correct viscosity oil.Scans codes and documents the code in the ECM and views the freeze frame data for the code.How does a mechanic diagnose the P2646 code? The valve train may be excessively noisy if one or more rockers are stuck in the incorrect position.The Check Engine Light will be illuminated.The engine valve train will not move as designed causing a low power condition.Too thick of an oil will cause the system to not work as designed. The incorrect oil viscosity is being used.The engine may have excessive sludge binding the rockers from moving or the oil is too thick.

The rocker arm actuator is clogged with sludge or is sticking intermittently.The oil passages are clogged or the oil pressure is not up to specifications.The ECM detects a problem in the rocker arm system for bank 1.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. 'A' Rocker Arm Actuator System Performance or Stuck Off Bank 1 What the P2646 code means