What does code P2A86 mean?

DTC codes / P2Axx · Hybrid propulsion / P2A86

P2A86Alternative Fuel Pump B Compression Stroke Valve Control Circuit High

P2A86 indicates that the powertrain control module has detected an abnormally high voltage on the control circuit for the compression stroke valve of alternative fuel pump B. This valve is used in some alternative fuel systems to manage pump timing or isolation, and a high voltage reading typically points to an open circuit, a short to power, or a failed valve solenoid.

SystemPowertrain

Code typeGeneric (all makes)

SeverityMedium

Fix difficultyIntermediate

AreaHybrid propulsion

Guidance is general and written for all OBD-II vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.