Engine light is on and now have a code PO455 EVAP emission control system leak (large). Sorry wrote the wrong code previously. How to determine problem and fix.
SOURCE: I had two problems posted for my Ford Explorer
CODE PO455 EVAPORATIVE EMISSION CONTROL SYSTEM LEAK DETECTED.POSSIBLE CAUSE - CANISTER VENT SOLENOID STUCK OPEN OR.FUEL TANK PRESSURE SENSOR HAS FAILED MECHANICALLY.OR BAD FUEL CAP. CODE PO1400 -DIFFERENTIAL PRESSURE FEED BACK EGR SENSOR CIRCUIT LOW VOLTAGE DETECTED.POSSIBLE CAUSE -DPF EGR SIGNAL CIRCUIT SHORTED TO GROUND OR DPF EGR SIGNAL VREF CIRCUIT OPEN OR DPF EGR SENSOR IS DAMAGED OR HAS FAILED.I WOULD HAVE GARAGE OR DEALERSHIP TO USE THEIR DIAGNOSTIC EQUIPMENT TO CHECK OUT YOUR EMISSION CONTROL SYSTEM.AND EGR VALVE BECAUSE PARTS IS TOO EXPENSIVE TO BUY.IF YOU DONT NEED THEM.SEE YOU CAN REPLACE THE DPF EGR SENSOR AND THE CANISTER VENT SOLENOID.BUT IT COULD BE A LEAKING GAS CAP OR SOMETHING ELSE.SO LET GARAGE CHECK IT OUT.TO BE ON SAFE SIDE.NOW YOU CAN BUY THOSE 2 SENSORS AND IT COULD FIX YOUR RIDE.I KNOW MONEY IS TIGHT ECONOMY IS IN BAD SHAPE.
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