2000 Nissan Frontier XE EGR OBDII Monitor Incomplete
Asked by jluangrath88 Feb 10, 2017 at 08:29 PM about the 2000 Nissan Frontier 2 Dr XE Standard Cab SB
Question type: Maintenance & Repair
I have a 2000 Nissan Frontier XE that has been going through the California smog test hell hole currently. A few months ago the CEL threw a P0400 code. I got it checked and turned out there was a clog in the EGR. I got that fixed. No more light. Yay! Fast forward a few weeks later when it was time to get a smog test. The smog tech tells me that the EGR monitor is not compete and that I need to complete the drive cycle and drive it for a few more miles. I did what I was told. Brought it back a week or two after that... still NOT COMPLETE. The guy gives me same response. I do the same thing. OVER AND OVER. It has been 2 or so months of this crap and the EGR monitor is still not complete! All the other monitors are fine except that one. The vehicle runs fine. So what can possibly be preventing the EGR monitor from completing? Please help.
16 Answers
Maybe it is time for a new ECM.
Read this first ---- http://repairpal.com/Drive-Cycle-Issues
From what I'm reading on this code, I think there is still a problem with the EGR system. I think your mechanic should have another look....Possible causes; Exhaust Gas Recirculation (EGR) volume control valve stuck closed, Faulty Exhaust Gas Recirculation (EGR) volume control solenoid valve, Faulty EGR Valve Faulty EGR temperature sensor and circuit, Exhaust Gas Recirculation (EGR) solenoid valve harness is open or shorted, Exhaust Gas Recirculation (EGR) solenoid valve circuit poor electrical connection, Dead (Weak) battery.
jluangrath88 answered 7 years ago
I'm reply to the answers I received, my CEL no longer comes on since I unclog the EGR. So no more DTCs show up when I plug in my scanner anymore. All the other monitors set just fine though. And my battery is only a year or so old.
Does the scanner indicate that the drive cycle is complete or in progress?
jluangrath88 answered 7 years ago
It just says incomplete. The smog tech guy reset the OBDII system when I first got the EGR unclog. When he did that the other monitors reset as well, but once I did the drive cycle the completed just fine EXCEPT for this darn EGR. It's driving me insane for months on end now.
There is an underlying problem some where. EGR system components all need to be checked, and look for broken wires, which usually a cure at plugins.
I wonder whats telling the technician that the EGR monitor is still not complete. No codes, how do you know what to look for? Do you have a print out of the test results? I have heard horror stories about smog techs. out in California.
jluangrath88 answered 7 years ago
I have the OBDII scanner so I check it myself as well. No DTCs being thrown. The smog tech also told me the same. No codes, just for some odd reason the EGR monitor is not ready. Here in California, your car can pass everything in smog and emissions... but if ANY of the monitors in the OBD system shows up "incomplete" they deem it as a "FAIL" because they said its "not ready..." It's a pain in the ass.
I am having the exact same problem with the 02 2.4 frontier. I have run several drive cycles and the exact same issue.. I’m stumped.
I'm having the exact same problem with 99 Nissan frontier if any body can help it would be greatly appreciated thanks
HI, I am sorry that you have not been helped yet. I just came online and saw your question. Ok, the drive cycle you need to perform is condition based, not mileage based. Below is the obd2 drive cycle you need to do Cold Start. In order to be classified as a cold start the engine coolant temperature must be below 122°F (50°C) and within 11°F (6°C) of the ambient air temperature at startup. Do not leave the key in prior to the cold start or the heated oxygen sensor diagnostic may not run. Idle. The engine must be run for two and a half minutes with the air conditioner on and rear defroster on. The more electrical load you can apply the better. This will test the O2 heater, Passive Air, Purge "No Flow", Misfire, and - if closed loop is achieved- Fuel Trim. Accelerate. Turn off the air conditioner and all the other loads and apply half throttle until 55mph (88km/hr) is reached. During this time the Misfire, Fuel Trim, and Purge Flow diagnostics will be performed. Hold Steady Speed. Hold a steady speed of 55mph (88km/hr) for 3 minutes. During this time the O2 response, air Intrusive, EGR, Purge, Misfire, and Fuel Trim diagnostics will be performed. Decelerate. Let off the accelerator pedal. Do not shift, touch the brake or clutch. It is important to let the vehicle coast along gradually slowing down to 20 mph (32km/hr). During this time the EGR, Purge and Fuel Trim diagnostics will be performed. Accelerate. Accelerate at 3/4 throttle until 55- 60mph (88-96 km/hr). This will perform the same diagnostics as in step 3. Hold Steady Speed. Hold a steady speed of 55mph (88km/hr) for five minutes. During this time, in addition to the diagnostics performed in step 4, the catalyst monitor diagnostics will be performed. If the catalyst is marginal or the battery has been disconnected, it may take 5 complete driving cycles to determine the state of the catalyst. Decelerate. This will perform the same diagnostics as in step 5. Again, don't press the clutch or brakes or shift gears.
I have the same thing with my 97 xe, that drive cycle has WAY too many things to do practically on any road near me(I've tried it and it's near impossible, especially adding 4 gallons of gas and turning the key off then a hundred other things) and then repeating the test? Funny thing is I've searched all manner of forums on this and absolutely nobody has ever posted that the problem was solved and this is the answer. Just a lot of the same advice about batteries and egr valves and drive cycles but nobody ever gets fixed. Has anyone ever gotten this fixed? Thought so.
I'm having exact same problem with my 2002 frontier 2.4, has anyone found a solution?? This is unbelievable
