Ford engine codes p0401 code#

They might find thereвЂ™s just some carbon deposits that need to be scraped off. ThatвЂ™s where IвЂ™d start, ask the shop to remove the valve. Specifically they identify problems that have been detected in the flow rates of the exhaust gasses back into the engine. 2 requires the valve probably be removed for a look-see. P0401 and P0402 Diagnostic Trouble Codes (DTC) relate to the Exhaust Gas Recirculation (EGR) system in vehicles. The valve is opening ok, but the temperature measuring sensor is faultyДЎ,3,4 require the valve be replace probably.The valve is opening ok, but the pintle position measuring sensor is faulty.The EGR valve is opening ok but thereвЂ™s some obstruction in the path elsewhere (carbon deposits).Before you begin our guide on fixing the P0401 engine code, take some time to learn about your Ford EGR and what makes it work. When even one of these components fail, it could trigger your P0401 OBDII trouble code. The EGR valve is defective and not opening as far as it should Engine detonation The Ford EGR system is comprised of several smaller components.It determines how open the valve is by some combination of measuring the valveвЂ™s temperature, or by measuring the position of the valveвЂ™s pintle.

Ford engine codes p0401 code#

The code means the computer thinks the EGR valve should be more opened that it is for the engine load. More load, like stepping on the gas to accelerate onto the freeway, going uphill, it generally opens more than just rumbling down the street to get a Big Gulp at the 7-11 at 35 mph. No CKP, ECT, EGR Pintle, Fuel Injector, IAC, IAT, MAF, MAP, Misfire, TP or VSS codes set, ECT input more than 167вЏ, BARO input more than 70 kPa, throttle angle below 1. How much it is supposed to open depends on the engine load. Engine running in steady state driving conditions (closed loop), then the PCM detected that the signal from the DPFE sensor indicated insufficient EGR gas flow. The EGR is supposed to open when the combustion chamber needs to be cooled off to prevent out of spec emissions. The code is saying it isnвЂ™t opening enough. It might not be closing completely when it should, true enough, but thatвЂ™s not what the code is for. The problem is that the EGR value fails to close?