Rocker Arm Oil Pressure Switch ‘B’ Circuit High Voltage

Table of contents

P2652 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 P2652 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.

Tech Notes

  • The most common problem that can set the P2652 code is the engine oil. Before replacing any parts change the engine oil with the factory recommend oil weight.

Cost of diagnosing the P2652 ACURA code

  The cost of diagnosing the P2652 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

  When a malfunction is detected during the first drive cycle, a Pending DTC is stored in the Powertrain Control Module (PCM) memory. If the malfunction returns in the next (second) drive cycle, the MIL comes on and a Confirmed DTC and the freeze data are stored.

Possible Symptoms

  • Engine Light ON (or Service Engine Soon Warning Light)

P2652 ACURA Description

  The VTEC system activates rocker arm oil control solenoid B by command from the Powertrain Control Module (PCM), and it charges/discharges the hydraulic circuit of the VTEC mechanism that switches valve timing between Low and High. The PCM monitors oil pressure in the hydraulic circuit of the VTEC mechanism using rocker arm oil pressure switch B downstream of rocker arm oil control solenoid B. If there is a difference between the oil pressure condition in the hydraulic circuit determined by the PCM command and the oil pressure condition determined by the status of rocker arm oil pressure switch B, the system is considered faulty, and a DTC is stored.


Leave a Reply

Your email address will not be published. Required fields are marked *