P2AA0

Alternative Fuel Return Line Valve Control Circuit Low

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$17–56 (est.)

Symptoms

Check Engine light comes on
Reduced engine power
Unstable engine operation
Increased fuel consumption

Causes

Alternate fuel return valve malfunction
Open or short circuit in control circuit
Poor contact in control circuit connectors
Engine control unit malfunction

How to Fix

Check valve control circuit integrity
Check the condition of connectors and contacts
Test alternative fuel return valve
Check the operation of the engine control unit
Replace the faulty valve or repair the wiring

Related codes

P2A9F P2AA1 P2AA2