A coolant leak can develop from the front of the cylinder head that can appear to be a head gasket leak. There is a threaded plug just below the camshaft that may leak if there is corrosion present on the threads. Cleaning any residue, re-installing the plug with pipe thread (Teflon) tape, and torquing the plug to the specification typically repairs the leak.
Problems for specific Nissan Maxima years:
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Newest reported Nissan Maxima problems
The AC system may blow warm air due to refrigerant loss caused by a leaking low pressure AC hose. These hoses commonly develop a leak at the hose crimp connection.
The engine mount on the right side can wear prematurely and cause excessive engine movement.
The rear spoiler (if equipped) may allow water to leak into the trunk and onto the trunk lock assembly. This could cause corrosion on the lock assembly leading to false "trunk open" signals to the body control module (BCM) and erroneous security alarm system activation.
The external seal on the engine oil cooler can fail and create an oil leak.
code 325 piggy backs just about any other code when a failure occurs.
Nissan calls this a ghost code. It is a software glitch that has never been solved. In most cases, repair the primary code and the 325 does not return.
the only way this code is valid is if it is a stand alone code with no other issues.
Service Engine light came on. Took it to Auto-Zone initially. The diagnostic tool pointed to the EGR valve. I then took the car to a Nissan dealership who advised me it was indeed the EGR valve "stuck in the open position" along with a bad bank 1 convertor. Now, according to the dealership the engine is burning oil. Time for a second opinion.
If the power steering pump develops leaks, it can drip onto the lower control arm bushing causing the bushing to deteriorate. A knocking noise will be heard when driving over bumps and it may become more difficult to control the vehicle.