DPFE 9J460 Sensor
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New User
Joined: Jan 2004
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DPFE 9J460 Sensor
2001 - 4.6 liter, code is P1401. Checked EGR valve, changed EGR solenoid. Cleared the code but it has returned, found the DPFE Sensor on the driver side, has two hoses running to the bottom and a set of wires. I have located this part at the ford dealer $98.00. I have read several articles which said that I can test the solenoid based on the output voltage of .2 to .3 egine off key on.
Can someone explain to me how to test this DPFE sensor, The tech sheets I have been reading might as well have been in Greek.
I dont want to drop another $100.00 and not be sure it is going to clear my check engine light.
thanks
Can someone explain to me how to test this DPFE sensor, The tech sheets I have been reading might as well have been in Greek.
I dont want to drop another $100.00 and not be sure it is going to clear my check engine light.
thanks
Hotshot
Joined: Aug 2002
Posts: 12,679
Likes: 15
From: BC, Canada
I don't know of any way to test the DPFE other than watching it's signal on a scan tool.
The DPFE is by far the most common cause of a P1401 and a P0401.
Before replacing it though you can check to make sure the EGR system is working by applying vacuum to the EGR valve with the engine idling. When you apply vacuum to it the engine should stall or almost stall. If not then you probably have plugged EGR ports in the intake manifold.
The DPFE is by far the most common cause of a P1401 and a P0401.
Before replacing it though you can check to make sure the EGR system is working by applying vacuum to the EGR valve with the engine idling. When you apply vacuum to it the engine should stall or almost stall. If not then you probably have plugged EGR ports in the intake manifold.
Senior User
Joined: Feb 2004
Posts: 146
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From: LaGrande, OR
DPFE sensor test (according to Chilton)
1. Disconnect pressure hoses at the DPFE sensor
2. Connect a hand vacuum pump to the downstream pickup mared REF on the sensor.
3. Using a multimeter, backprobe the SIG RTN circuit at the DPFE connector.
4. With the ignition ON, Signal voltage should be .2-.7 volts.
5. Apply 8-9in Hg of vacuum to the sensor. Voltage should be greater than 4 volts.
6. Quickly release the vacuum from the sensor. Voltage should drop to less than 1 volt in 3 seconds.
7. If the sensor does not respond as specified, check the power and ground circuits.
8. If power and ground circuits are functional, the sensor is faulty.
So as long as you have a vacuum pump and multimeter it should be fairly simple.
2. Connect a hand vacuum pump to the downstream pickup mared REF on the sensor.
3. Using a multimeter, backprobe the SIG RTN circuit at the DPFE connector.
4. With the ignition ON, Signal voltage should be .2-.7 volts.
5. Apply 8-9in Hg of vacuum to the sensor. Voltage should be greater than 4 volts.
6. Quickly release the vacuum from the sensor. Voltage should drop to less than 1 volt in 3 seconds.
7. If the sensor does not respond as specified, check the power and ground circuits.
8. If power and ground circuits are functional, the sensor is faulty.
So as long as you have a vacuum pump and multimeter it should be fairly simple.
New User
Joined: Jul 2007
Posts: 1
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Originally Posted by krunker
1. Disconnect pressure hoses at the DPFE sensor
2. Connect a hand vacuum pump to the downstream pickup mared REF on the sensor.
3. Using a multimeter, backprobe the SIG RTN circuit at the DPFE connector.
4. With the ignition ON, Signal voltage should be .2-.7 volts.
5. Apply 8-9in Hg of vacuum to the sensor. Voltage should be greater than 4 volts.
6. Quickly release the vacuum from the sensor. Voltage should drop to less than 1 volt in 3 seconds.
7. If the sensor does not respond as specified, check the power and ground circuits.
8. If power and ground circuits are functional, the sensor is faulty.
So as long as you have a vacuum pump and multimeter it should be fairly simple.
2. Connect a hand vacuum pump to the downstream pickup mared REF on the sensor.
3. Using a multimeter, backprobe the SIG RTN circuit at the DPFE connector.
4. With the ignition ON, Signal voltage should be .2-.7 volts.
5. Apply 8-9in Hg of vacuum to the sensor. Voltage should be greater than 4 volts.
6. Quickly release the vacuum from the sensor. Voltage should drop to less than 1 volt in 3 seconds.
7. If the sensor does not respond as specified, check the power and ground circuits.
8. If power and ground circuits are functional, the sensor is faulty.
So as long as you have a vacuum pump and multimeter it should be fairly simple.
Thanks again.
Senior User
Joined: Dec 2005
Posts: 274
Likes: 0
Originally Posted by perplexed
2001 - 4.6 liter, code is P1401. Checked EGR valve, changed EGR solenoid. Cleared the code but it has returned, found the DPFE Sensor on the driver side, has two hoses running to the bottom and a set of wires. I have located this part at the ford dealer $98.00. I have read several articles which said that I can test the solenoid based on the output voltage of .2 to .3 egine off key on.
Can someone explain to me how to test this DPFE sensor, The tech sheets I have been reading might as well have been in Greek.
I dont want to drop another $100.00 and not be sure it is going to clear my check engine light.
thanks
Can someone explain to me how to test this DPFE sensor, The tech sheets I have been reading might as well have been in Greek.
I dont want to drop another $100.00 and not be sure it is going to clear my check engine light.
thanks
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