What does code P2A84 mean?

DTC codes / P2Axx · Hybrid propulsion / P2A84

P2A84Alternative Fuel Pump B Compression Stroke Valve Control Circuit Range/Performance

P2A84 indicates that the powertrain control module (PCM) has detected an out-of-range or performance fault in the electrical circuit that controls the compression stroke valve for alternative fuel pump B. The PCM monitors the valve's command and feedback signals and sets this code when the circuit's voltage, current, or response time does not match expected values under the commanded conditions.

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.