2006 Ford Freestar 3.9L P0401 EGR flow

2006 Ford Freestar 3.9L P0401 EGR flow

Ford Freestar On the 2006 Ford Freestar 3.9L engine, The P0401  is pointing to an insufficient flow in the EGR System. This can be due to a leak somewhere in the EGR System, a faulty EGR Control Solenoid, a faulty EGR Pressure Feedback Sensor or a faulty EGR Valve itself. On this vehicle, the EGR Valve, Pressure Feedback Sensor and Solenoid are all one assembly and labeled as an EGR Module. You can find the EGR Module located on the top, front, driver’s side of the engine. Carefully inspect the metal tubes and…

Read More

2000 Ford F-150 NOx Emissions

2000 Ford F-150 NOx Emissions

Ford F-150 On the 2000 Ford F-150 with the 5.4L engine, the NOx being high is usually most associated with a problem in the EGR System. The NOx means there is too much exhaust gas not being recycled properly and this very well could produce a knock or ping. So, best place to start here is by checking all the vacuum lines to/from the EGR Valve, EGR Pressure Feedback Sensor and EGR Control Solenoid making sure there are no cracks, holes or loose connections (inspect these carefully! This is common, especially at…

Read More

1998 Mazda B2500 EGR Sensor

1998 Mazda B2500 EGR Sensor

Mazda B2500 On the 1998 Mazda B2500, the P1401 is a fairly straight forward code pointing to a fault with the Pressure Feedback Exhaust Sensor (aka EGR Position Sensor). It’s actually a fairly common fail item on these vehicles. Carefully inspect the rubber lines at the base of the sensor and the metal tubes they connect to, looking for any cracks, holes or loose/missing connections (inspect carefully! very common for these to dry-rot and crack!). Inspect the electrical connector and wire harness for any loose, broken or damaged wires. If…

Read More

2002 Ford Windstar P1401 EGR Sensor

2002 Ford Windstar P1401 EGR Sensor

Ford Windstar On the 2002 Ford Windstar, the P1401 is a fairly straight forward code pointing to a fault with the Differential Pressure Feedback EGR (DPFE) Sensor. It’s actually a fairly common fail item on these vehicles. Carefully inspect the rubber lines at the bottom of the sensor for any cracks, holes or loose/missing connections. Inspect the pipe the lines connect to for any cracks, holes or signs of leaks. Inspect the electrical connector and as far up the harness as you can, looking for any loose, broken or damaged…

Read More

2001 Ford Explorer EGR Sensor

2001 Ford Explorer EGR Sensor

Ford Explorer On the 2001 Ford Explorer, the P1408 is pointing to a fault in the EGR System. A very common fail item associated with this code is a faulty D.P.F.E (DIFFERENTIAL PRESSURE FEEDBACK EGR) Sensor. Back in the day, there was actually a Recall for this sensor. Ford acknowledged this sensor was defective, so they re-designed and updated it. Carefully inspect the 2 lines at the bottom of the DPFE, looking for any cracks, holes or loose/missing connections. Inspect the electrical connector and wire harness for any loose, broken…

Read More