Question about 2002 Nissan Frontier Crew Cab

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2002 NISSAN FRONTIER

SERVICE ENG SOON CODE P0402

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Sounds like a problem in the egr valve or the porting through the egr valve or maybe a vaccuum line that has something to do with monitoring it. make sure there are no vacuum lines near it that are leaking and is there a difference in the idle that you may notice.

Posted on Feb 26, 2009

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If too much EGR flow exists due to an EGRC-BPT valve malfunction, off idle engine roughness will increase.
If the roughness is large, then the vacuum to the EGR valve is interrupted through the EGRC-solenoid valve.
If the engine roughness is reduced at that time, the EGRC-BPT valve malfunction is indicated.
DTC No. Malfunction is detected when ... Check Items (Possible Cause)
P0402  The EGRC-BPT valve does not operate properly.  EGRC-BPT valve
 EGR valve
 Loose or disconnected rubber tube
 Blocked rubber tube
 Camshaft position sensor
 Blocked exhaust system
 Orifice
 Mass air flow sensor
 EGRC-solenoid valve

Posted on Jan 17, 2010

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My a/c will not blow cold air.

Posted on Mar 27, 2009

  • glad2bhome9 Mar 27, 2009

    Do you think that I should pay 700.00 to get this fix?

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