DeusExMaxima

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I have a manual transmission 05 Maxima se. I have a Kinetix intake manifold, a factory option 350z steering wheel imported from Japan, and headers. My check engine light has been on for a very long time and the only way that a car can get smogged in California now is when the check engine light is off as they plug the machines into the ECU now. I believe the code 1800 is from the Kinetix intake manifold since I do not believe that solenoid is used because it would be on the original manifold. The code 1564 may have to do with the change of steering wheel. The other three codes seem to pertain to the o2 sensor. It's possible that either the wiring is broken or shorting out to ground or the o2 sensors are bad. What are your thoughts?

DeusExMaxima

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Anyone.....anyone?

DeusExMaxima

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This forum seems to be not like it used to be. Lots of people were very helpful. Looks like I'll have to figure things out myself which is okay because I'm used to that. Hopefully someone will benefit from this thread who might be having the same codes

I installed the original steering wheel and code number 1564 stopped being thrown so one code down four more to figure out

DeusExMaxima

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I found my VIAS air control solenoid from my original intake manifold and I plugged it in and that erased code 1800. When I cleared the codes, only 1031 and 1148 were left

DeusExMaxima

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O2 sensor fuse is good

DeusExMaxima

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I have Cattman headers and the codes that are remaining indicated that bank 1 sensor 1 had a problem. I figured it was either the wiring or the sensor. I looked at the wiring and it seemed to be okay upon a visual inspection. I decided to unplug the o2 sensor and replace it. Keep in mind, with my headers, I had to extend the harness on the o2 sensor. Anyhow, I unplug the o2 sensor, bought a o2 sensor remover and removed the o2 sensor. With over 138,000 miles on the car it was probably due for a change anyway. The o2 sensor did look pretty cruddy. I went to autozone and bought a Bosch o2 sensor for about $80. I had to cut off the connector and solder it to my extended harness. It is difficult to solder stainless steel wire so I had to use my 240 watt soldering gun which was hot enough to get the solder to flow on the stainless steel wire in the o2 sensor harness.

I put some anti seize compound on the threads and screw the sensor in and plugged it back in. I fired up the car after clearing the codes and lo and behold, no check engine light. I let it idle for about 10 minutes and still no check engine light. I drove it on the freeway for about 45 miles and the check engine light is not on. I figure I will drive it a day or two and cycle the engine and if the check engine light doesn't come on then I will conclude that the problem is solved and I can go get a smog check.

Apollos2

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Deus, still up in here eh? Good for you. Sorry, but don't have any answers though.

DeusExMaxima

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Hey Apollo: Nice seeing you again. Yes, I pop in every once in a while. This CEL needed to be resolved so I figured Id run it by everyone, but this forum seems dead.

****UPDATE**** After 55 miles of driving, I was waiting at a drive thru and the CEL popped on. UGH!!!!! I pulled the DTC (codes) and I got the old code of P1283 and a new one P0420. These appear to be "soft" codes as they pop up every so often. After a Cooks tour online, I found that it may be O2 sensor-related, but to the rear sensor and to the cat. I also found that when an O2 sensor is replaced, the idle mixture relearning procedure has to be performed.

The procedure is as follows:
1. Warm up engine.
2. Shut off engine and disconnect MAF sensor.
3. Start engine and let it IDLE for at least 3 seconds.
4. Turn engine OFF.
5. Plug in MAF sensor.
6. Check to see if code P0102 (I think) has thrown.
7. Clear the code (do the pedal dance).
8. Start the car ad let it IDLE for at least 10 minutes.

This allows the ECU to adjust the idle mixture due to normal wear and tear and changes in the sensors. Hopefully this will keep the CEL away!!!

DeusExMaxima

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Well, the saga continues unfortunately. My CEL was off for about 79 miles yesterday. During that time, I was able to pass smog since the light was out at the time of the smog test. Here in California, they dont check exhaust emissions for cars after 2000...they just plug the car in an OBDII connector to see if you have any DTCs. Right after the smog check, the CEL came on while cruising at highway speed. I did not pull the code, but just cleared it. The CEL came on fairly shortly after.. it was code P0000. I cleared that code and did various driving, mostly stop and go. The light came on after around 20 miles. It threw codes P1283 and P1274. I cleared the codes and drove 40 miles home, mostly highway speeds. This morning I performed the relearning for throttle valve, throttle position, and air volume. I drove a little over a mile with no CEL. So far Ive gone about 42 miles with no CEL.

These intermittent CELs are difficult because different codes are thrown under varying driving and over varying time. I could replace all my O2 sensors, install a Calif emissions cat and spend hundreds in parts and still not stop the light from coming on. Any suggestions?

DeusExMaxima

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Love the response from this forum.

Any how, I got almost 100 miles before the check engine light came on again. This time it had to do with the idol. I inspected the car and found that the PCV hose had come off the intake when I replaced one of the intake couplers which was cracked.

I cleared the codes and drove about 40 miles and then the check engine light came on again. This time it was 1283 which is the oxygen sensor in bank 2 before the catalytic converter. I replace that this morning and drove about 25 miles and the check engine light came on again. This time it was p0420 and p0400. 400 is the EGR system. I had not seen that before. Puzzling. 420 has appeared a couple of times so it seems that the catalytic converter is marginal. I cleared the codes and I have driven about 15 miles with no codes.

shatelb

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I have not seen this on my maxima but on my 1999 Camry V6. It was related to the EGR and Cat.

DeusExMaxima

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How did you fix it? Is the code for egr and the cat related? They seem like they would be independent of each other but when my light came on, both those codes were showing.

shatelb

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I had to replace the cat. Since it wasn't working right it was causing havoc with the O2 sensors and the EGR circuitry.

DeusExMaxima

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What cat did you have? Mine came with my Cattman y-pipe. Its supposed to be a high flow cat.

DeusExMaxima

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After 40 miles of short trips with no CEL, it came back on. The codes P0420 and p1283 were triggered. I disconnected the battery overnight in the hopes of clearing the history. I read that you must do that because the light can come back on if the history is not cleared.

If the light comes on, I will probably get a new cat.

DeusExMaxima

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I drove 80 miles of varying driving and the light came back on. The code this time was p1283. I clear the code and drove about another 40 miles and p1283 came back again. So it's been over 120 miles since any other code has been thrown. 1283 seems to indicate sensor one which I've already replaced both sensor ones so I'm baffled

DeusExMaxima

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Last night, I did the idle mixture relearn procedure. Code P1283 can be a lean condition caused by a leak in the intake area. I found a cracked intake junction a couple weeks ago and replaced it. The only area that could be leaking is the intake manifold itself. If P1283 comes back, then I will look at the manifold and make sure all hoses are good.I will also check the bolts from my intake manifold to make sure they are torqued correctly.

DeusExMaxima

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In the past week, I have driven 112 miles with no check engine light. The car runs beautifully so I'm keeping my fingers crossed.

DeusExMaxima

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145 miles...no CEL!!

DeusExMaxima

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Update...cel comes on still. Ttpically I get 1283 or 0400. Sometimes I can go only 10 or 12 miles before the light comes on and sometimes I can go almost 100. The car runs great so I'm not really sure what to do

KPat

Did you check whether the catalytic converted was really bad after replacing it ?