What is code P1408?
Fords with P0401, P1408 trouble code are known for problems with their DPFE sensors. These sensors detect the change in manifold vacuum pressure when the EGR is commanded on and off and display P0401, P1408 trouble codes. If you get an EGR code, DO NOT automatically assume that it’s a bad EGR valve!
What causes excessive EGR flow?
One of the most common culprits here has to do with your car’s air filter. An overly dirty filter restricts airflow into your engine, often leading to rich fuel conditions. By replacing your air filter, you should not only restore an ideal air-fuel ratio, but also the problems associated with excessive EGR system flow.
How do I fix code P0402?
What repairs can fix the P0402 code?
- Replacing the stuck open EGR valve.
- Replacing a broken catalyst in the exhaust.
- Replacing an EGR temperature sensor or cleaning the carbon off of it to repair it if it registers too much of a temperature change.
- Replacing the EGR backpressure control valve.
How do you fix a EGR flow malfunction?
What repairs can fix the P0400 code?
- Replacing the EGR valve.
- Replacing a broken vacuum line to the EGR valve.
- Replacing an EGR temperature sensor or cleaning the carbon off of it to repair it.
- Cleaning carbon out of EGR tubes to intake manifold.
Can I drive with a P0402 code?
Registered. You can drive it for as long as you want.
Is P0402 serious?
The sudden onset of a P0402 DTC is a relatively serious issue, due to potential ramifications toward vehicle drivability. In many cases, vehicle idling can be negatively impacted to the point of stalling, thereby causing unanticipated issues when coming to a stop at a traffic light or stop sign.
How much does it cost to replace EGR valve?
The average cost of replacing the EGR valve in your vehicle is anywhere from $250 to $350 on average, depending on your vehicle’s year, make, and model as well as the type of system it has. The cost of parts will be somewhere around $190 to $270, while the cost of labor will be anywhere from $60 to $80.
How do you check a Ford DPFE sensor?
Attach the hoses to the sensor as normal. Now remove the rubber vacuum hose from the top of the EGR valve diaphragm. With the truck running apply slight vacuum to the EGR valve and this will open the EGR valve. When the valve opens you will see the voltage on the top wire of the DPFE sensor change indicating flow.