Its a EVAP leak. I knock a hose off on my passenger side all the time when working on the engine, the check engine light always comes on, look for a loose hose if you havent figured this out already
P1494 Leak Detection Pump Switch or Mechanical Fault Check the vaccum supply to the LDP pump, also check the wiring to the LDP.
Trouble code P1494 means: Leak detection pump pressure switch or mechanical fault
possible faulty leak detection pump
Trouble code P1494 means: Leak detection pump pressure switch or mechanical fault
Trouble code P1494 means: Leak detection pump pressure switch or mechanical fault
Trouble code P1494 means: Split air cut valve solenoid
Trouble Code P1494 means:Leak detection pump pressure switch or mechanical fault
Trouble code P1494 means: Leak detection pump pressure switch or mechanical fault
Trouble code P1494 means:Leak detection pump pressure switch or mechanical fault
Trouble code P1494 means: Leak detection pump pressure switch or mechanical fault
Leak detection pump switch or mechanical failure
Trouble code P1494 means: Leak detection pump pressure switch or mechanical fault Trouble code P1495 means: Leak Detection Pump Solenoid Circuit Malfunction