How to replace a crankshaft sensor on a infinity fx 2003

Question edited for clarity and toss in some CAPS.

There is nothing that backs up memory. When you disconnect the battery, all memory is lost, which is why it is important not to do it!

You don't tell us the model? Is it a secret? All questions need 'year make model' as the FIRST 3 words.

If your have a 1999 Infinity I30, the ECM Fuse is Fuse 58.

58 10 Engine Control Module (ECCS), Mass Air Flow Sensor, Crankshaft Position Sensor, Idle Air Control Valve (IACV-ACC) Solenoid Valve, Ignition Coils, EGR, EGR Volume Control Valve, EVAP Control System Pressure Sensor

Infiniti i30 (A32; 1995-1999) fuses and relays

Fuse Box Diagrams https://fuse-box.info > infiniti > infiniti-i30-a32-1995-...

Fuse box diagrams (location and assignment of electrical fuses and relays) Infiniti i30 (A32; 1995, 1996, 1997, 1998, 1999).

Infiniti i30, i35 (A33; 1998-2004) fuses and relays

Fuse Box Diagrams https://fuse-box.info > infiniti > infiniti-i30-i35-a33-1...

Fuse box diagrams (location and assignment of electrical fuses and relays) Infiniti i30 / i35 (A33; 1998, 1999, 2000, 2001, 2002, 2003, 2004).

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Question edited for clarity and toss in some CAPS.
Question moved to model category.

You really never need the part number, because you order by 'year make model'. Sometimes they will ask for VIN Number, but not often. Or you go into the dealership parts department and you just ask for one.

https://shop.advanceautoparts.com/find/2005-infiniti-g35-crankshaft-position-sensor.c8223

More here

https://www.google.com/search?q=2005+Infiniti+G35+Coupe+Crankshaft+position+sensor

Videos. It is an easy job.

usually an O2 code is 3 digits and not this type of code. if it has an mass air flow sensor(MAF) it could be it. I would start with checking the MAF readings then the O2 readings. OBD 2 codes are emission regulated so no matter what car it is the codes represent the same problem.

You need to run a continuety test between the PCM and the sensor wire most likely a bad wire or the connection( if the Wire and connection is good its probably a bad pcm)

A 35 series battery with at least 500 cold cranking amps.

hi, i have infinity fx 35 2003 it light on the service engine camshaft position sensor bank 1 , i replaced the bank 1 after 3 hour it light on again service engine + VDC off and slip i put the scanner it told me camshaft position sensor bank 1 again what can i do ?

Infiniti FX Forum FX35 FX45 and FX50 Forums

looking for crankshaft sensor on 1998 infiniti qx4

go to ebay.com maybe you find it there.

The FX is a bouncy car, but it's necessary to accommodate it's good performance. You can try some aftermarket air shocks, or check into different tires. That should help.