1996 nissan 200sx manual trans, 1.6. ... OBD says speed sensor code p0500. Replaced speed sensor, speedo still not working. Checked old sensor with multi meter, its okay. Am I right in assuming that it could be the speedo itself, wires or the ECM? With the old sensor in it worked some of the time, but usually doesn't work unless driving over 20 miles. whats my next logical step into getting this speedo fixed?

SOURCE: Speedometer goes to 0 and trans downshifts

There are 2 speed sensors on the transaxle. One is for vehicle speed and one is for trans output shaft speed. My guess is that you replaced the one for output shaft speed.

Nissan Scope Technician- 10 years with Nissan

SOURCE: 2002 Nissan Sentra Loses Power

SERVICE IT .....OIL PLUGS, AIR ,FUEL AND OIL FILTERS GET TROTTLE SENCOR AND THE MASS AIR FLOW SENCOR CHECKED

SOURCE: 1996 Nissan Maxima o2 Sensor Location

check out www.maxima.org

SOURCE: 1996 nissan maxima check engine

Firstly, the code p1445 is actually an EVAP Canister Purge Control Valve...The most common problem is a failure of the valve itself, which is located at the top of the plenum chamber. Nissan offers a replacement valve with new bracket and hoses. It is around the $150-$200.00 mark.

But, remember to test the component (valve) first as this suggestion is just to the common problem, but in rare cases, it might be PCM related (water entry, shock etc)

Secondly, the p0500 code is a speed sensor and you can pick these up from autozone.....it provides the road speed for the speedometer and odometer..........if these are working fine, then you might have a wiring issue.

As these are 2 seperate systems, I doubt that they are related.

I hope this helps

SOURCE: I have a 1995 nissan altima GXE and i replaced my

Hello,
The EGR solenoid is activated by the ECM at mid range speeds so if you are testing it at a idle it will not show voltage. The ECM grounds the solenoid to turn it on which supplies vacuum the source to the EGR valve.. To test the EGR solenoid unplug it and supply power to the terminals on the solenoid with jumper wires. Just apply power momentarily and listen for the click.Don't power it on for long as it will damage the solenoid if energized for long periods.If the solenoid is working check the EGR valve by connecting a piece of vacuum hose to it and applying vacuum to it. If you put your fingers under the edge of it you can feel the diaphragm moving as it opens and closes when applying and removing the vacuum. If don't have a vacuum pump tester you can do it easily with your mouth on the hose as it doesn't take much vacuum.If the EGR is stuck remove it and try cleaning the carbon out.If you can't free it up replace the EGR valve. If you need more help here is a site which provides diagnostic help with pictures.The also have the part availible for purchase at a very low price along with many more hard to find emission related parts. www.qualityresale.net

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