1996 Nissan Maxima trouble shooting code: P0400

1996 NISSAN MAXIMA
163,000 MILES • 6 CYL • FWD • AUTOMATIC
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BIG31
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THE CODE I HAD BEFOR WAS P0100 WICH WAS MAF SENSOR SO I PUT A NEW MAF SENSOR AND A NEW AIR CHARGE TEMP SENSOR AND CLEARED THE CODES BUT THE CHECK ENGINE LIGHT CAME BACK ON 3 DAYS LATER WITH THIS NEW CODE [P0400] NOW THEY TOLD ME THE 4 PROBABLE CAUSES
1.EGR PASSAGES BLOCKED 2.EGR PINTLE STUCK CLOSED 3.EGR VOLUME CONTROL VALVE OPEN OR SHORTED 4.EGR TEMPERATURE SENSOR ERROR. NOW PLEASE HELP ME WHAT SHOULD I DO FROM HERE
Oct 27, 2010 at 9:41 AM
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LEGITIMATE007
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well I would personally replace the egr valve and or clean the egr exhaust tube and passages of carbon, basically,its clogged or faulty. I would also change the pcv valve ,just for good measure, that could be what is causing the egr to become faulty or dirty
Oct 27, 2010 at 9:52 AM