Powertrain
generic / SAE
P0086
Exhaust Valve Control Solenoid Circuit High Bank 2
Exhaust valve solenoid bank 2 control voltage above expected range. Short to power or open ground. The exhaust control valve modulates exhaust backpressure or routing (EGR feed, sound, regen support); a malfunction shifts torque mapping and may trigger limp mode.
SystemPowertrain
Typegeneric / SAE
GroupP0
Range / number– / 86
Possible causes
- Wiring shorted to battery high
- Connector pins corroded - high contact resistance low
- Supply wire pinched against B+ source low
Inspection / repair
- Difficulty: medium
- DIY: possible
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References
sae:J2012