What is P1401 code mean?
What is P1401 code mean?
P1401 – Differential Pressure Feedback Sensor (DPFE) Error (Ford)
Where is the DPFE sensor located?
The DPFE sensor is often located near the EGR valve. This valve is found behind the upper intake manifold, which is between the motor and the firewall. The DPFE sensor is often shaped like a small square. You will see two vacuum hoses attached to the bottom and there is a wiring harness coming from its side.
What does DPFE stand for on a Ford?
Differential Pressure Feedback Electronic
DPFE (Differential Pressure Feedback Electronic) Sensors are an integral part of the EGR (Exhaust Gas Recirculation) System. The DPFE Sensor provides information to the Powertrain Control Module (PCM) to tell it how much exhaust gas is flowing through the system.
What is a EGR temperature sensor?
The EGR temperature sensor is an engine management sensor that is part of the EGR system. It works together with the EGR solenoid to control the flow of the EGR system. The sensor is installed in between the exhaust and intake manifold, and monitors the temperature of the exhaust gases.
How do I know if my DPFE sensor is bad?
A faulty DPFE sensor can cause several problems:
- increased emissions.
- rough idle.
- hesitation.
- decreased engine power.
- decreased fuel efficiency.
- failed emissions.
- check engine light on.
Can you clean a DPF pressure sensor?
A DPF pressure sensor is vital to the longevity of the DPF, and if the DPF becomes completely obstructed, the regeneration process will not fix it. It will need to either be removed and professionally cleaned or replaced, both options on average costing thousands of dollars.
What are the symptoms of a bad DPFE sensor?
A faulty DPFE sensor can cause several problems:
- increased emissions.
- rough idle.
- hesitation.
- decreased engine power.
- decreased fuel efficiency.
- failed emissions.
- check engine light on.
What happens when a DPFE sensor goes bad?
Common signs include engine performance issues like rough idle and decrease in power, failing an emissions test, and the Check Engine Light coming on.
How do you diagnose a bad DPF pressure sensor?
If everything passes physical inspection, you can test the DPF differential pressure sensor using a multimeter set to 20V and a pressure gauge. With the battery on and engine off, connect the multimeter ground to the negative battery terminal and run a quick plausibility by checking the voltage of the battery.