What causes P1286 on a Honda?

Failed rocker arm oil pressure switch stuck low Open switch signal circuit Low oil pressure keeping the switch open Sludged VTEC passages Corroded switch connector

How do I fix P1286 on a Honda?

Verify actual oil pressure first Test the pressure switch operation Check the switch circuit wiring Clean sludge from VTEC passages Replace the switch after pressure confirmation

P1286 Rocker Arm Oil Pressure Sensor Signal Stuck Low

Q: What does P1286 mean on a Honda?

P1286. Rocker Arm Oil Pressure Sensor Signal Stuck Low. Applies to Civic, Accord, CR-V with VTEC oil pressure sensing.

Category: Powertrain - Ignition
Severity: Check Engine Light
Applies to: Civic, Accord, CR-V with VTEC oil pressure sensing

This fault is part of the Honda VTC and VTEC codes guide. It covers the system and the order to check it.

What does P1286 mean on a Honda?

P1286. Rocker Arm Oil Pressure Sensor Signal Stuck Low. This Honda-enhanced code applies to Civic, Accord, CR-V with VTEC oil pressure sensing.

Common causes of P1286

Failed rocker arm oil pressure switch stuck low
Open switch signal circuit
Low oil pressure keeping the switch open
Sludged VTEC passages
Corroded switch connector

How to fix P1286

Verify actual oil pressure first
Test the pressure switch operation
Check the switch circuit wiring
Clean sludge from VTEC passages
Replace the switch after pressure confirmation

Sources and review

Last updated 2026-09-06.