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This code indicates excessive EGR flow. This is a repair that can be misdiagnoised. This can be nothing more than a defective EGR valve but may not be. I suggest you click the link I will post and print out all the information and take this information to a trusted shop that has the proper tools necessary to diagnois and repair this problem. Otherwise you may just throw parts at the problem and still not have it fixed. Click the link.
What else can I help you with?
What kind of educational background would one be required to have to get a job in asbestos surveying?
To get a job in asbestos surveying, it would be a good idea to have the Asbestos P402 certificate. Also, previous experience is always incredibly helpful.
What does code p402 mean on a 1997 ford explorer?
Trouble code PO402 is a generic (all car makes) code meaning "Exhaust Gas Recirculation- Excessive Detected". It means that the computer detected an abnormal or unexpectedly high rate of air flow in the exhaust gas recirculation emissions system.
