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P0400 Diagnostic Trouble Code Discussion for October 2006

Exhaust Gas Recirculation System Flow Malfunction


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Trouble Ticket Help Requests for DTC P0400
Help Request Posted
1997 Geo Tracker 1.6L MIL Lamp on VIN: 2CNBJ1365V
P0400: EGR System Performance. ... codes, one for an o2 sensor heater circuit, and the p0400 for egr flow incorrect. After performing the entire mithchell flow chart, we came up with an egr vacuum modulator to enable the egr to work. We also replaced the front o2. Vehicle returned with p040...
October 12, 2006
1996 Nissan Maxima GLE 3.0L MIL Lamp on VIN: JN1CA21DXT
P0400: EGR System Recirculation Flow. Hey, Car came in with code P0400. First thing I did was to open egr valve with a handheld vacuum pump with car running. No change. I made sure egr valve was moving and it was. I removed egr, egr plate and egr pipe and cleaned them(with carb cleaner and piece ...
October 25, 2006
1996 Suzuki X-90 1.6L Poor Idle Quality, MIL Lamp on VIN: JS3LB11S1V
P0400: EGR System Fault Too Much Or Too EGR Little Flow). Tested both selonoids for egr,bench test ok,with wheels blocked in drive,can get vacume going down to egr,both selonoids are working ,and when i apply vac to egr with engine running it kills motor,I can also notice cold it idles fine,as it warms up idle goes a...
October 30, 2006
1996 Suzuki X-90 1.6L Poor Idle Quality, MIL Lamp on VIN: JS3LB11S1V
P0400: EGR System Fault Too Much Or Too EGR Little Flow). Tested both selonoids for egr,bench test ok,with wheels blocked in drive,can get vacume going down to egr,both selonoids are working ,and when i apply vac to egr with engine running it kills motor,I can also notice cold it idles fine,as it warms up idle goes a...
October 31, 2006
1997 Geo Tracker 1.6L MIL Lamp on VIN: 2CNBJ1365V
P0400: EGR System Performance. ... codes, one for an o2 sensor heater circuit, and the p0400 for egr flow incorrect. After performing the entire mithchell flow chart, we came up with an egr vacuum modulator to enable the egr to work. We also replaced the front o2. Vehicle returned with p040...
October 12, 2006
1996 Nissan Maxima GLE 3.0L MIL Lamp on VIN: JN1CA21DXT
P0400: EGR System Recirculation Flow. Hey, Car came in with code P0400. First thing I did was to open egr valve with a handheld vacuum pump with car running. No change. I made sure egr valve was moving and it was. I removed egr, egr plate and egr pipe and cleaned them(with carb cleaner and piece ...
October 25, 2006
1996 Suzuki X-90 1.6L Poor Idle Quality, MIL Lamp on VIN: JS3LB11S1V
P0400: EGR System Fault Too Much Or Too EGR Little Flow). Tested both selonoids for egr,bench test ok,with wheels blocked in drive,can get vacume going down to egr,both selonoids are working ,and when i apply vac to egr with engine running it kills motor,I can also notice cold it idles fine,as it warms up idle goes a...
October 30, 2006
1996 Suzuki X-90 1.6L Poor Idle Quality, MIL Lamp on VIN: JS3LB11S1V
P0400: EGR System Fault Too Much Or Too EGR Little Flow). Tested both selonoids for egr,bench test ok,with wheels blocked in drive,can get vacume going down to egr,both selonoids are working ,and when i apply vac to egr with engine running it kills motor,I can also notice cold it idles fine,as it warms up idle goes a...
October 31, 2006