P0335
 

Got a P0335, car wouldnt start. When it did my CEL turned on giving me that P0335. I pulled out the crankshaft position sensor and checked resistance and got 2.04 Kila Ohms. Anyone know whats a good reading on a good sensor? I just ordered a new one, but once I saw this reading I got a bit spooked because I believe this is a good reading but not sure. I drive a 2015 frs.

Welcome to our forum - :clap:

Some dude on the internet says:

"To measure the spinning resistance of the crankshaft sensor use an ohmmeter (multimeter). Properly functioning sensor will range from 550 to 750 ohms."

Iffen that correct, someone will be along soon to correct it - ;)

The Crankshaft position sensor should be always between 1836 to 2244 Ω according to the manual.

do remember that proper resistance is only one thing that a sensor needs. This applies to any sensors, not just crank sensors.

They need to produce a specific thing. Crank sensors usually produce a pulsing signal. I don't know off the top of my head what our specific ones produce, but that needs to come out of the sensor and back to the ECU.

The sensor needs a good 12v power source, and good ground, and no corrosion or damage to the connectors, wiring harness etc.

One thing you can check easily is the crank signal. Connect a scan tool and read engine RPM, or maybe directly from the crank sensor PID if the scan tool is good enough.

If you don't want to take it in, and you don't have a scan tool, look carefully at the sensor connector and wiring harness as far as you can see. If it all looks good(no burnt spots, pinched areas, rub thrus etc), I'd hazard a guess as that the sensor has failed.

You could go a step further and test for power and ground at the sensor harness. You need a test light. Unplug the sensor. Hook up your test light to a good ground or the negative terminal of the battery. then turn the key on. test the correct terminal on the connector for power. if its a good bright light, it probably has power. Then connect your test light onto the POSITIVE side of the battery. Now test the negative wire on the connector. It should also light up nice and bright.

The signal side is a bit trickier to test and often requires more complicated procedures, and honestly, generally its the sensor if these things are good.

Now, before you all tell me how much of a moron I am, yes, I am well aware that these are just basic tests and there are other things to test and other procedures to follow to know FOR SURE, but they require more knowledge and experience as well as more complicated tools. These are generally beyond the experience of a normal dude who is asking about resistance.