What Does the P0335 Code Mean and How to Troubleshoot It?

It sounds like you're dealing with a frustrating issue with your Nissan 350Z, especially with the `P0335` code showing up. This code typically points to a problem with the crankshaft position sensor. There are a few reasons this might be happening even after replacing parts. First, it could be a faulty crankshaft position sensor itself, but it might also be related to the wiring or connections. Sometimes, the harness can be open or shorted, or there could be a poor electrical connection in the circuit. It's also worth checking the signal plate, as damage there can lead to similar issues. Additionally, if the starter motor is faulty or if there’s a dead or weak battery, that could also contribute to the problem. I recommend starting by inspecting the connection of the crankshaft position sensor. Sometimes, the wire can break internally, which would prevent proper communication with the engine control module (ECM) and cause the code to persist. A simple reset of the ECM by disconnecting the negative battery terminal might clear the code temporarily, but it’s essential to address the underlying connection issue. If the computer is detecting a problem with the crankshaft or camshaft position sensor, even if they are new, it can lead to erratic idling or starting issues. This is because the ECM relies on accurate signals from these sensors to function correctly. Addressing these connection issues should help resolve the erratic acceleration and other symptoms you’re experiencing. If you need further assistance, don't hesitate to reach out.