Get the app
Quick access from your home screen.
DTC codes / P2Axx · Hybrid propulsion / P2A74
P2A74 indicates that the powertrain control module (PCM) has detected an intermittent or erratic signal on the control circuit for the hydraulic fuel pump select valve, which is used in alternative-fuel vehicles to switch between fuel sources. The PCM monitors the circuit for expected voltage changes and flags this code when the signal behaves unpredictably, such as momentary opens, shorts, or erratic valve response.
Guidance is general and written for all OBD-II vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.
Get the app
Quick access from your home screen.