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I have a 2001 sentra that has a bluebird swap and a b14 OBDII ecu. The car seems to be running fine and is not giving any codes, but after 300miles of driving the catalyst monitor and egr monitor are not set. I need these to set to pass inspection! Any ideas on why they are not setting?
I've done the recommended drived cycle on top of the normal driving mileage. I'm not sure what to look for, because it's not throwing codes for anything... it just doesn't seem to be running the tests.
It's a JWT ecu and I have an emanage ultimate piggyback left over from when it was a b15 ecu. The car has been through many starts and trips to/from work. I went out specifically to do the drive cycle (which is a pita to do on a public road), and the same two still are not set.
I discovered an issue that may be leading to my problem. I missed the fact that the rear oxygen sensor in the 98 and newer vehicles is different than the earlier years. My ecu is expecting a rear O2 signal to range from 0 to 2.2v. The one in my car only ranges from 0 to 1v. Time to get a new (old) O2 sensor and splice it in.
The JWT website says running it the way I am will throw a code. I haven't gotten that code, but maybe for some reason it's preventing the test from being run. Only one way to find out. Hope it works!
In case this info is not on the board, the smaller oxygen sensor from pre 98 cars is an M12x1.25 thread. I had to drill out a plug and tap it so I can thread the older sensor in my current 18x1.5 oxygen sensor bung.
After buying and installing a bosch 3-wire rear O2 sensor for a 1996 se-r, I'm now getting P0136 code. At least it seems like's it's checking the sensor now, but I have to go back through all the wiring to make sure I have it correct. Hopefully I can figure it out tonight and clear the code/set the readiness test.
Anyone know the pin out on a bosch 3-wire? It's got white, black, and red wires. I believe the black is signal, with white and red being the heater... but that could also be why I'm getting a code! Have to pull it off and meter it tonight. The two wires that are connected (with high resistance) should be the heater, right? The signal wire should be independent...?
Thanks for the info! ...but I needed the O2 sensor wiring from the connector to the sensor, not the car harness. I have the FSMs for the b14 and b15. I think I figured it out, but I need to drive it to see if the monitors set. This is such a pita
On 1997 Toyota Tercel and Paseo models, the readiness flag for the EVAP monitor will never set, and no dealer fix is yet available. Other vehicles that often have a "not ready" condition for the EVAP and catalytic converter monitors include 1996-98 Volvos, 1996-98 Saabs, and 1996-97 Nissan 2.0L 200SX models.
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