P0085 Exhaust Valve Control Solenoid Circuit Low Bank 2

P0085 indicates a low exhaust valve control solenoid circuit on bank 2. The bank 2 exhaust VVT control path is grounded or below expected voltage.

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 bank 2 timing components until the low exhaust solenoid circuit and oil-control path are tested.

Symptoms of P0085

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 P0085

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

Measure bank 2 exhaust solenoid control voltage, feed, ground, resistance, and current while checking for short-to-ground faults.
Inspect connector terminals, oil contamination, harness routing near exhaust heat, fuse supply, and module driver output.
Compare low circuit behavior with commanded exhaust timing, actual cam angle, idle quality, and freeze-frame system voltage.

Related OBD-II codes

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