2018 Honda Pilot P2652 Rocker Arm Oil Switch

2018 Honda Pilot

Engine Options:

  • 3.5L V6 Engine
  • Horsepower: Approximately 280 hp
  • Torque: Approximately 262 lb-ft


  • 6-speed automatic transmission

Fuel Economy:

  • The EPA estimated fuel economy is around 18-20 MPG city and 26-27 MPG highway for FWD, and slightly lower for AWD.

For 2018 Honda Pilot owners who have encountered the diagnostic trouble code (DTC) P2652 related to the rocker arm oil pressure switch, understanding the issue is essential for maintaining optimal engine performance. This article aims to provide in-depth insights into the P2652 code, its significance, and offer guidance on addressing it effectively. The P2652 code is linked to the Rocker Arm Oil Pressure Switch Circuit, a vital aspect of the Variable Valve Timing (VVT) system.

Understanding the P2652 Code:

The P2652 code is a Diagnostic Trouble Code (DTC) that activates when the Engine Control Module (ECM) detects an issue with the rocker arm oil pressure switch circuit. This switch is responsible for monitoring the oil pressure within the rocker arm assembly and ensuring proper lubrication. It plays a critical role in optimizing engine performance by adjusting the timing of the intake and exhaust valves through the VVT system.


Potential Causes of P2652 on a 2018 Honda Pilot:

  • Faulty Rocker Arm Oil Pressure Switch: A malfunctioning rocker arm oil pressure switch can provide inaccurate readings or fail to transmit proper signals, leading to the activation of the P2652 code.
rocker arm oil pressure switch

A vehicle’s rocker arm oil pressure switch plays a pivotal role in ensuring optimal engine performance and longevity. This switch monitors the oil pressure specifically in relation to the rocker arms and camshaft assembly. The rocker arm oil pressure switch serves as a safeguard, detecting variations in oil pressure that could potentially impact the proper lubrication of these critical components.

  • Wiring or Connector Issues: Damaged wiring or loose connectors within the rocker arm oil pressure switch circuit can disrupt signal transmission, causing the code’s activation.
  • Low Engine Oil Level: Insufficient oil levels can affect the oil pressure reading and trigger the code.

Diagnosis and Resolution Steps for P2652 Rocker Arm Oil Pressure Switch:

  1. Visual Inspection: Begin by visually inspecting the wiring, connectors, and components related to the rocker arm oil pressure switch circuit. Inspect for visible damage, corrosion, or loose connections.
  2. Check Engine Oil Level: Verify that the engine oil level is adequate. Low oil levels can impact oil pressure readings. Add oil as needed.
  3. Test Rocker Arm Oil Pressure Switch: Using appropriate diagnostic tools, test the functionality of the rocker arm oil pressure switch. Replace the switch if it’s found to be faulty.
  4. Diagnostic Scan: Utilize a professional diagnostic scanner to retrieve specific data related to the P2652 issue. This can help pinpoint the exact source of the problem.
  5. Clear Codes and Test: After addressing the issue, use the diagnostic tool to clear the P2652 code. Conduct a test drive to ensure the code doesn’t reappear and that the vehicle’s performance remains optimal.

The P2652 code related to the rocker arm oil pressure switch on a 2018 Honda Pilot highlights a potential problem within the VVT system. Timely diagnosis and resolution are essential for maintaining engine efficiency and performance. While some initial troubleshooting can be performed, contacting a qualified Honda automotive technician for thorough diagnostics and repairs is recommended. Regular maintenance and attention to engine codes can contribute to a smooth and powerful driving experience in your Honda Pilot.

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