Question about 2000 Ford F150 Flareside SuperCab

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P0402 error,where is the egr valve and how do I replace it on a 2000 ford f150?

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If you have a code P0402 on a Ford truck, replacing the EGR valve has about one chance in 20,000 of fixing the problem. The most likely cause of this code is a bad DPFE Sensor. The next most likely cause would be clogged EGR ports. The next most likely cause after these would be a broken vacuum line or a failed vacuum control solenoid. The EGR valve itself is the least likely cause of this code. I have been in this business for 36+ years and still have enough fingers on one hand to count the number of failed EGR valves I have ever seen.
Also, I can't be real specific in telling you exactly where it is located without knowing which engine you have...All I can tell you is to look for the steel pipe coming up to the engine from the exhaust. The EGR valve will be at the end of it.

A little note for the wise:
Fault codes retrieved from the onboard computer systems in automobiles NEVER tell you which parts to replace. All the fault codes do is tell you which of the many circuits and systems that are monitored by the computer is malfunctioning. Once the fault codes are retrived, the circuits or systems involved must be diagnosed to find the actual cause of the problem or failure.

One of the biggest misconceptions of the American public is that all an auto repair technician has to do is plug-in the "Magic Box" and it will tell him exactly what is wrong with the car and what parts to replace. Nothing can be further from the truth. I really wish it worked that way. If you find one of these magic boxes, let me know, I need one...LOL

Posted on Mar 12, 2011

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Grand carvan gives p402 code


This is not a cut and dry fault code. This means that more than one thing wrong can set the code in the computers memory. Here is the low down on the P0402 fault code. This is from the OBD2 fault code diagnostic book.

P0402 - Exhaust Gas Recirculation Flow Excessive Detected
Symptoms - Engine Light ON (or Service Engine Soon Warning Light)
- Possible engine hesitation
Possible causes - EGR solenoid valve harness is open or shorted
- EGR solenoid valve circuit poor electrical connection
- EGR volume control valve stuck closed
- Dead (Weak) battery
- Faulty EGR temperature sensor and circuit
- Faulty EGR Valve
- EGR passage clogged
- Exhaust gas leaks

Jan 18, 2012 | Cars & Trucks

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My 2006 escape 3.0 idles rough but seems to run smooth down the road.engine light is on and shows code po402 excessive egr flow. engine starts fine when cold, but cranks for about 10 seconds unless you...


P0402 Exhaust Gas Recirculation Flow Excessive Detected A code P0402 most likely means one or more of the following has happened:
  • The DPFE (differential pressure) sensor is faulty and needs to be replaced
  • There is a blockage in the EGR (most likely carbon buildup)
  • The EGR valve is faulty
  • The EGR valve may not be opening due to a lack of vacuum
  • Solutions
  • With a P0402, it is common for people to replace the EGR valve, only to have the problem return. The most likely solution is to replace the DPFE sensor.
    • Check the voltage at the DPFE sensor both at idle and when the EGR is open
    • Replace the DPFE sensor

May 04, 2011 | Ford Escape Cars & Trucks

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Service engine code P0402 for Ford Mustang


P0402 OBD-II Trouble Code - Exhaust Gas Recirculation Flow (EGR) Excessive Detected

What does that mean?
EGR stands for Exhaust Gas Recirculation. It is part of the vehicle emmissions system, and is used to reduce combustion temperature and pressure to control Oxides of Nitrogen. There are generally three parts to the EGR system: the EGR valve, an actuator solenoid, and a differential pressure sensor (DPF). These things work together to deliver the correct amount of recirculation based on engine temperature, load, etc. The P0402 code means that OBD detected an excessive amount of EGR.

Symptoms
You may notice drivability problems such as the engine may surge off idle. There may also be other symptoms.

Causes
A code P0402 most likely means one or more of the following has happened:
* The DPFE (differential pressure) sensor is faulty and needs to be replaced
* There is a blockage in the EGR (most likely carbon buildup)
* The EGR valve is faulty
* The EGR valve may not be opening due to a lack of vaccuum

Possible Solutions
With a P0402, it is common for people to replace the EGR valve, only to have the problem return. The most likely solution is to replace the DPFE sensor.
* Check the voltage at the DPFE sensor both at idle and when the EGR is open
* Replace the DPFE sensor

Hope helps (remember rated and comment this).

May 27, 2010 | 2001 Ford Mustang

3 Answers

I have a 99 f150 that has a code showing its p0402 egr valve excessive flow the engine is a 5.4 how do i fix it


First make sure all lines are connected to EGR , if not ,connect them if they are? Then remove EGR value and clean and reconnect.

Jan 24, 2010 | 1999 Ford F150 Regular Cab

1 Answer

I have a 99 ford f150 it has a code reading p0402 excessive flow


Check my profile page and follow the steps listed in my Tips and Tricks for P0401, once the housing is claen reset the light and see if trouble returns if it does, I suggest you replace the sensor, the sensor is located on the left hand side of the engine in front of the EGR valve. Hope this helps let me know

Jan 23, 2010 | 1999 Ford F150 Regular Cab

1 Answer

The code p0402 excessive flow of the egr valve how can fix it


There are 4 egr related items on your truck. A egr valve, a egr solenoid, a egr vaccum manifold switch, and a egr relay

Jan 23, 2010 | 1999 Ford F150 Regular Cab

1 Answer

What does fault code P0402 means.


Exhaust Gas
Recirculation Flow (EGR) Excessive Detected A code P0402 most likely means one or more of the following has happened:
  • The DPFE (differential pressure ) sensor is faulty and needs to be replaced
  • There is a blockage in the EGR (most likely carbon buildup)
  • The EGR valve is faulty
  • The EGR valve may not be opening due to a lack of vaccuum

Sep 02, 2009 | 2001 Ford Explorer

1 Answer

2001 Ford Escape error code P0402


Ok here is the solution when I had the exact same problem with my 2001 Ford Escape:
Replace:

Idler air control valve
EGR vaccum sylenoid
EGR valve

I did all of this work myself (and as a girl it was not hard at all), it cost me around $170.00 for all of the parts, had it done in less than 2 hrs., erased the codes and have not had a problem since then! I hope this helps you out, cuz it sure would have helped me out when I encountered the same problem.

Apr 07, 2009 | 2001 Ford Escape

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