01 bonneville se ses light wont leave
Thread Starter
Member
Posts like a V-Tak
Joined: Jan 2010
Posts: 30
Likes: 0
From: Pittsburgh PA
01 bonneville se ses light wont leave
hi all i have a 2001 bonne se im getting dtc code p1404 egr closed position performance checked the egr valve out and the pintle moves freely by hand and the pipes were clear so i figured the motor that moves the pintle might have just went bad so i got a new egr valve and still the same light is there something else that could cause this thanks so much for you help
Junior Member
Posts like a Ricer Type-R
Joined: Dec 2009
Posts: 19
Likes: 0
You prob need to be looking at a short to voltage, short to ground, or high resistance on one of the wires. The black is a low refrence ground, the gray is a 5 volt refrence i would start there!
Thread Starter
Member
Posts like a V-Tak
Joined: Jan 2010
Posts: 30
Likes: 0
From: Pittsburgh PA
sorry took so long to get back i took the egr valve off and made sure the lines were clear and the pintle moved it did, so i put sealer and a gasket on to make sure it will not leak, then my buddy used his scanner to check out the computer and he can open and close the egr valve with it so im guessing that it has good power going to it.........i just want this light gone lol
Retired Senior Admin
Expert Gearhead
Joined: May 2006
Posts: 29,661
Likes: 40
From: Sheboygan Wisconsin
Start checking the wires for a short or open circuit.
EGR
Black Signal ground
Brown EGR pintle position signal
Gray EGR valve control
Pink EVAP system
Gray 5 volt reference
EGR
Black Signal ground
Brown EGR pintle position signal
Gray EGR valve control
Pink EVAP system
Gray 5 volt reference
Senior Member
Posts like a Turbo
Joined: Dec 2009
Posts: 348
Likes: 0
From: Kitchener On.
Measure the voltage from the 5 volt reference circuit of the EGR position sensor to the ground circuit of the EGR position sensor.
Does the DMM display voltage near the specified value?
is it 5 volts
Does the DMM display voltage near the specified value?
is it 5 volts
DINOSAURUS BOOSTUS
Expert Gearhead
Joined: Mar 2005
Posts: 41,391
Likes: 30
From: Enfield, CT
Senior Member
Posts like a Turbo
Joined: Dec 2009
Posts: 348
Likes: 0
From: Kitchener On.
do this before previous post
Turn OFF the ignition.
Disconnect the EGR valve.
Turn ON the ignition, with the engine OFF.
Use a scan tool in order to observe the EGR position sensor parameter.
Does the scan tool indicate that the EGR Position Sensor is at the specified value? 0%
perform test from previous post only if 0%
let me know results
Turn OFF the ignition.
Disconnect the EGR valve.
Turn ON the ignition, with the engine OFF.
Use a scan tool in order to observe the EGR position sensor parameter.
Does the scan tool indicate that the EGR Position Sensor is at the specified value? 0%
perform test from previous post only if 0%
let me know results
Senior Member
True Car Nut
Joined: Sep 2008
Posts: 7,979
Likes: 2
From: Arlington, WA
The gray wire is the reference voltage. Connect the Red probe from your DDM to the reference voltage wire and the black to ground.