Acura Engine Code P2646

On my high mileage 2006 Base I got the code P2646 recently which seems to automatically put the computer in limp mode which cuts the fuel injection at exactly 4000rpm. 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.

P2646 Code A Rocker Arm Actuator System Performance Stuck Off Bank 1 In The Garage With Carparts Com

Oil pressure switch is XXXXX.

Acura engine code p2646. Engine Light ON or Service Engine Soon Warning Light P2646 ACURA Meaning The Variable Valve Timing and Lift Electronic Control VTEC system activates the Rocker Arm Oil Control Solenoid VTEC Solenoid Valve by command from the Engine Control Module ECM Powertrain Control Module PCM and it chargesdischarges the hydraulic circuit of the VTEC mechanism that switches valve timing. What do I purchase. How is the P2646 code repair.

Depending on year make and model DTC P2646 may have number of causes. After doing some more research I keep seeing P2646 is related to either the VTEC OIL PRESSURE SWITCH or aka ROCKER ARM OIL PRESSURE SWITCH loose connection low engine oil VTEC problem or valve timing issue. The engine would not rev over 2500 RPM.

Start by checking the Possible Causes listed above. Replacing the A rocker arm actuator. After driving about one mile the MIL came back on.

I am guessing it is likely to be the Rocker Arm Oil Pressure going bad but is this the same oil pressure switch of the TSB. What are the common causes of code P2646. Check for damaged components and look for broken bent pushed out or corroded connectors pins.

Diagnostic Trouble Code DTC P2646 code stands for A Rocker Arm Actuator System Performance Stuck Off Bank 1 Its a generic OBD-II powertrain code supported by a. Bank 1 in the definition indicates the engine side where the cylinder 1 is present and the letter A indicates the Intake camshaft. The code P2646 VTEC Oil Pressure Switch Circuit Low Voltage.

You may want to check the engine oil level also the connector to the solenoid oil pressure switch connector. When the system is not working correctly the rocker arms are not moving to the different position causing a low power situation. Code P2646 is a code for the A rocker arm control circuit performance problem.

This code indicates that there is an issue with rocker arm oil pressure switch. With the engine running engine speed a minimum of 4800 rpm Variable that is depending on the engine load. This video is about Honda P2646 P2647 engine check code fix I-Vtec 24 Odyessy Accord Element CRV.

This code indicates that there is an issue with rocker arm oil pressure switch. P2646 is a common diagnostic trouble code that affects Acura made vehicles including the MDX. The same code P2646 came back.

Here are some diagrams. The Rocker arm oil pressure switch verifies the correct oil pressure in the Variable Valve Timing VVT mechanism and is often referred to as the VTEC Variable Valve Timing. Rocker Arm Oil Pressure Switch VTEC Oil Pressure Switch Circuit Low Voltage Description.

Shutting the car of or clearing the code with a scanner returns the engine to full rpm. What repairs can fix the P2646 code. P2646 Acura Description The VTEC system activates the rocker arm oil control solenoid VTEC solenoid valve by command from the engine control module ECMpowertrain control module PCM and it chargesdischarges the hydraulic circuit of the VTEC mechanism that.

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. Car obd codes car OBD-ii codes car Fault codes Car Trouble codes Car Error codes diagnostic codes P2646 Acura A Rocker Arm Actuator System Performance or Stuck Off Description. What gives me that code is an aggressive downshift which jerks the engine faster and.

Code P2646 indicated the PCM detected that the variable Code P2646 indicated the PCM detected that the variable cylinder management system was stuck in the Off position. I go through what could be the cause of the fault code. The Rocker arm oil pressure switch verifies the correct oil pressure in the Variable Valve Timing VVT mechanism and is often referred to as the VTEC Variable Valve Timing.

Visually inspect the related wiring harness and connectors. The rocker arm oil control solenoid is ON the rocker arm oil pressure switch remains ON. Engine Light ON or Service Engine Soon Warning Light P2646 ACURA Description The Variable Valve Timing and Lift Electronic Control VTEC system activates the Rocker Arm Oil Control Solenoid VTEC Solenoid Valve by command from the Engine Control Module ECM Powertrain Control Module PCM and it chargesdischarges the hydraulic circuit of the VTEC mechanism that.

P2646 is a common diagnostic trouble code that affects Acura made vehicles including the TL. I scanned for codes and it came up P2646. I replaced the VTEC Oil Pressure Switch cleared the codes and took the car for a test drive.

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