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1996 Nissan Maxima trouble shooting code: P0400

Tiny
BIG31
  • MEMBER
  • 1996 NISSAN MAXIMA
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 163,000 MILES
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
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Wednesday, October 27th, 2010 AT 9:41 AM

1 Reply

Tiny
LEGITIMATE007
  • MECHANIC
  • 5,121 POSTS
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
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Wednesday, October 27th, 2010 AT 9:52 AM

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