p.o 402

This topic has 2 replies, 3 voices, and was last updated 8 years ago by Dave Tidman.

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February 9, 2017 at 1:11 am #876190
dripper
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have a 1997 Nissan pickup 2.4 liter check engine came on. scan it came up( p.o.402 EGR FLOW EXCESSIVE) what do that mean.
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February 9, 2017 at 2:54 am #876195
Billy
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1. Test the pressure transducer / differential pressure sensor
2. Test the EGR valve
February 9, 2017 at 3:35 am #876198
Dave Tidman
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Check starting on page 185 of the FSM

http://www.nicoclub.com/FSM/Hardbody/1997_D21_Truck/ec.pdf

It walks you through the test procedure for this code.

Good luck and let us know what you found.
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