Code result
P2A73
Alternative Fuel Hydraulic Fuel Pump Select Valve Control Circuit High
High severity
What it means
The control circuit of the alternative fuel hydraulic fuel pump select valve reports a control circuit high condition. Pump path selection cannot be commanded reliably.
Is it safe to drive?
No — stop driving
This code can put the vehicle into limp or reduced-power mode. Avoid extended driving and have the vehicle diagnosed promptly.
Most likely causes
Control wire shorted to B+
highOne of the most commonly reported causes for this code — check this first.
Open valve coil
mediumA plausible cause — test and verify before replacing parts.
Connector pins corroded - high contact resistance
lowLess common, but worth ruling out after the more likely causes.
Related help
Get the full diagnosis
Add your vehicle and see step-by-step repair help, recalls, and TSBs in Wrenchify.
Diagnose P2A73 freeNo credit card required