P2A74

Alternative Fuel Hydraulic Fuel Pump Select Valve Control Circuit Intermittent/Erratic

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$17–89 (est.)

Symptoms

Unstable operation of the engine using alternative fuel
Reduced engine power
Check Engine Light Illuminates
Problems with switching between fuel types
Increased fuel consumption

Causes

Open or short circuit in valve control circuit
Poor contact in control circuit connectors
Solenoid valve malfunction
Wiring harness damage
Engine control unit malfunction

How to Fix

Check valve control circuit integrity
Inspect connectors and contacts for corrosion or damage
Check the resistance and operation of the solenoid valve
Check the presence of power and control signals from the computer
If necessary, replace the valve or repair the wiring

Related codes

P2A73 P2A75 P2A72