P0086 Exhaust Valve Control Solenoid Circuit High Bank 2

P0086 points to a high exhaust valve control solenoid circuit on bank 2. The VVT control path is open, shorted to voltage, or above expected range.

Code details

Generic OBD-II · P0

System: Fuel / Air
Code type: Generic (SAE / ISO controlled)
Standard: SAE J2012 / ISO 15031-6

Diagnostic boundary

A diagnostic trouble code reports that a monitored test failed. It does not prove one specific part is bad, and manufacturer logic can add vehicle-specific conditions.

Do not replace cam sensors or phasers before isolating the high bank 2 exhaust solenoid circuit.

Symptoms of P0086

Check-engine light on, sometimes with rough or uneven running.
Hesitation, surging, or a noticeable change in fuel economy.
Occasionally hard starting or a smell of unburnt fuel.

Common causes of P0086

A failing or contaminated sensor (MAF, MAP, oxygen or air-fuel sensor).
Intake or vacuum leaks, or an exhaust leak near an upstream sensor.
Wiring, connector, or fuel-delivery problems that skew the reading.

Useful checks before replacing parts

Check bank 2 exhaust solenoid signal voltage, feed, ground, open circuits, short-to-voltage faults, connector fit, and resistance.
Inspect oil-soaked connectors, harness rub points near the cylinder head, terminal tension, shared VVT feeds, and recent service work.
Compare high circuit events with commanded exhaust timing, actual cam angle response, and related bank 2 VVT or correlation codes.

Related OBD-II codes

These nearby fuel / air entries can help compare wording and pin down the fault area.