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DTC codes / P2Axx · Hybrid propulsion / P2A98

P2A98Alternative Fuel Tank Select Valve B Control Circuit High

P2A98 indicates that the powertrain control module (PCM) has detected an abnormally high voltage on the control circuit for the alternative fuel tank select valve B. This valve directs fuel flow between tanks in a multi-tank alternative fuel system, and a high voltage reading typically means the circuit is open, shorted to power, or the valve's internal coil is faulty.

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.

Running on fumes Free guides aren't free to make. Top up the tank. Any amount, one time. Fuel the Garage