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CEL "PO 402"
#440875 09/19/02 12:30 AM
Joined: Sep 2002
Posts: 3
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1 98 SVT Offline OP
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1 98 SVT
Newbie
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Joined: Sep 2002
Posts: 3
Went to my local Autozone and they came up with this code. Excessive exhaust emissions, so on and so forth. The guy said it could be anything, so he suggested in not starting at replacing the EGR valve. Has anyone come up with this code and a fix? The car runs fine although gas MPG is somewhat bad.

Thanks!

Re: CEL "PO 402"
#440876 09/19/02 12:41 AM
Joined: Aug 2000
Posts: 4,713
The Dalles, OR
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Derk-xB Offline
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Derk-xB
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Joined: Aug 2000
Posts: 4,713
The Dalles, OR

Derek Scion xB 5-spd Previous: 2000 Silver Frost SVT Please share the road with cyclists.
Re: CEL "P0402"
#440877 09/19/02 02:02 AM
Joined: Dec 2001
Posts: 667
Northern VA
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GeoPappas Offline
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GeoPappas
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Joined: Dec 2001
Posts: 667
Northern VA
P0402=Exhaust Gas Recirculation (EGR) flow excess detected

Possible causes:
-- EGR valve stuck open.
-- EGR vacuum regulator (EGR V.R.) solenoid vent plugged or iced.
-- EVR circuit shorted to GND.
-- EVR circuit shorted to VREF.
-- Pinched/iced pressure hoses.
-- Improper vacuum hose connection.
-- Plugged/pinched EGR V.R. vacuum hose.
-- Plugged EGR tube.
-- Damaged EGR V.R. solenoid.
-- Damaged Differential Pressure Feedback EGR (D.P.F. EGR) sensor.
-- Damaged PCM.

96 Contour SE Duratec V6 24-valve 2.5L ATX 108,000 mi. Replaced: crankshaft w/ DMD, EGR valve (clogged), EVR, DPFE, PCV valve, evap emissions hose & tube (cracked), window regulator (broken), LH & RH PCV tubes, UIM gasket (leak), ignition coil

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