Nissan Repair Questions? Ask a Mechanic for Answers ASAP
Hi There, I'm Clayso a certified master automobile technician with 30 years of automotive repair and diagnostic experience.
From your description most likely the Oxygen Sensor (O2) is causing the majority of idle problems. The O2 measures the oxygen and fuel content in the exhaust and reports to the Engine Control Module (ECM). The ECM controls the idle and the air to fuel ratio based on reading from the O2(s). The clicking sound is most likely the Idle Air Control Valve (IACV) trying to control the engine's idle. If you would like more information let me know the vehicle specifics eg. year and engine size, the first 10 of the VIN would be very helpful, also let me know the specific P code(s) that are set.
I hope this information is helpful. If you have any questions let me know. You can reply back to me through this thread at any time.
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Hi there, I'm following up on any progress with this repair. I hope the information I gave was helpful. If you have any questions or run into any problems let me know.