Crankshaft Position Sensor Error P0335 recurred after r&r

Everything I read indicated that the 2 sensors are identical. Nissan parts and service people re-affirmed. None the less, I got lucky and actually did put the correct one (per your description) in each position. I have since learned that there is a new cylindrical metal replacement sensor. The ones in the kit from Nissan looked identical to the old ones.
Another interesting thing was I put the old "defective" crank sensor in the cam slot as a test. I went for a test drive with my code reader installed. It flagged P0335 when the engine started a little rough, then under accelleration it flagged P0725, Engine Speed Sensor circuit. No Cam sensor error with the old crank sensor. Color me skeptical... Everything I read indicated that the 2 sensors are identical. Nissan parts and service people re-affirmed. None the less, I got lucky and actually did put the correct one (per your description) in each position. I have since learned that there is a new cylindrical metal replacement sensor. The ones in the kit from Nissan looked identical to the old ones. Another interesting thing was I put the old "defective" crank sensor in the cam slot as a test. I went for a test drive with my code reader installed. It flagged P0335 when the engine started a little rough, then under accelleration it flagged P0725, Engine Speed Sensor circuit. No Cam sensor error with the old crank sensor. Color me skeptical...

Thank you Master, I will try the dealer again on Monday. They already ran my VIN and told me I was not covered by the recall when I bought the sensor pack (recall kit). They did not mention the ECM reprogramming though that would explain the lingering effects of a replaced sensor so I have to believe you are on to something.
I also suspect they will try to charge me for this service. This experience has lowered my longstanding high opinion of Nissan. Thank you Master, I will try the dealer again on Monday. They already ran my VIN and told me I was not covered by the recall when I bought the sensor pack (recall kit). They did not mention the ECM reprogramming though that would explain the lingering effects of a replaced sensor so I have to believe you are on to something. I also suspect they will try to charge me for this service. This experience has lowered my longstanding high opinion of Nissan.

Almost forgot the most important part; the part number of the two sensor kit I got was B3731-6N27K. The nomenclature on the package is "Position and Phas" and "09/05/11". Does that tell you anything? Almost forgot the most important part; the part number of the two sensor kit I got was B3731-6N27K. The nomenclature on the package is "Position and Phas" and "09/05/11". Does that tell you anything?

The saga continues...
Went to the Nissan service dept for the ECM reprogram. They said there is no reprogram for my VIN since it was not covered by the recall; he was only going to reset the error codes for $50 + tax. Told him I could reset the code with my scanner. He then suggested that I may have bent a pin installing the sensor and they needed to remove and inspect both (crank and cam) sensors and go from there at a minimum of $115. I walked away frustrated and told him this is my last Nissan. Before I go back with my tail between my legs I am going to do the connector inspection myself and swap the sensors (cam for crank, both of which are new from Nissan as you may recall). I am almost certain that this will not fix the problem and that really frustrates me.
I am desperate for some reliable advice. The saga continues... Went to the Nissan service dept for the ECM reprogram. They said there is no reprogram for my VIN since it was not covered by the recall; he was only going to reset the error codes for $50 + tax. Told him I could reset the code with my scanner. He then suggested that I may have bent a pin installing the sensor and they needed to remove and inspect both (crank and cam) sensors and go from there at a minimum of $115. I walked away frustrated and told him this is my last Nissan. Before I go back with my tail between my legs I am going to do the connector inspection myself and swap the sensors (cam for crank, both of which are new from Nissan as you may recall). I am almost certain that this will not fix the problem and that really frustrates me. I am desperate for some reliable advice.

Copy all. Waiting for the engine to cool down. I will do as you suggest. While cooling down myself, I found the EC manual online athttp://x.nissanhelp.com/forums/Knowledge... and am currently reading the troubleshooting for P0335. Looks to be what you suggest plus some other checks like verifying good ground, etc. Will report back when I have more data. I appreciate your support and encouragement. I have many great Nissan memories staring in the 70s with a Datsun 510, then a '78 280Z, an '84 300ZX Turbo, and an '89 Maxima. They all had their quirks but what car doesn't. Copy all. Waiting for the engine to cool down. I will do as you suggest. While cooling down myself, I found the EC manual online at http://x.nissanhelp.com/forums/Knowledgebase.html?catid=81 and am currently reading the troubleshooting for P0335. Looks to be what you suggest plus some other checks like verifying good ground, etc. Will report back when I have more data. I appreciate your support and encouragement. I have many great Nissan memories staring in the 70s with a Datsun 510, then a '78 280Z, an '84 300ZX Turbo, and an '89 Maxima. They all had their quirks but what car doesn't.