What is the p2646 code on a Honda CRV?
Shops are reporting a high incidence of P2646 Honda trouble codes on Honda CR-V, Honda Element and Accord models with the 2.4L engine. The P2546 Honda code definition is: P2646: VTEC Oil Pressure Switch Circuit Low Voltage.
What is the oil pressure switch on a Honda p2646?
P2646 HONDA | Rocker Arm Oil Pressure Switch Circuit Low Voltage | The Variable Valve Timing and Lift Electronic Control (VTEC) system activates the Rocker Arm Oil Control Solenoid (VTEC Solenoid Valve) by command from
How does the Honda CRV VTEC oil solenoid work?
The VTEC system increases the amount of intake valve lift for increased power. It accomplishes this by turning a control solenoid ‘ON’ to allow oil pressure into the VTEC control passages to apply pins that will lock the intake rockers. When the oil pressure is present, the pressure switch signal will go high.
Is there an issue with the VTEC oil pressure switch?
Honda has had issue with the VTEC oil pressure switch and has updated the part. The switch can fail at any RPM illuminating the MIL and setting a corresponding code. 1. Verify engine oil level and condition, remedy as necessary. 2. Normally closed, the VTEC oil pressure switch grounds the reference voltage from the PCM on the BLU/BLK wire.
What does p2646 mean on Honda CRV?
P2646 is a common diagnostic trouble code that affects Honda made vehicles, including the CR-V. This code indicates that there is an issue with rocker arm oil pressure switch.
The VTEC system increases the amount of intake valve lift for increased power. It accomplishes this by turning a control solenoid ‘ON’ to allow oil pressure into the VTEC control passages to apply pins that will lock the intake rockers. When the oil pressure is present, the pressure switch signal will go high.
What is the oil pressure switch on a Honda CRV?
The VTEC system controls the variable valve timing in your CR-V. It does this by activating the VTEC/Rocker arm solenoid. It uses the Rocker Arm oil pressure switch to monitor the pressure of this system. When the pressure is lower than the solenoid, the check engine light will come on and you’ll get P2646.
What causes Honda engine light to set p2646?
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. P2646 HONDA Tech Notes The most common problem that can set the P2652 code is the engine oil.