My check engine light came on, along with occasional rough idling, on my
2001 Pathfinder.  I brought my vehicle to my dealer to get checked out, and
the problem is a failing ignition coil.  They say that there is no way to
accurately determine which of the 6 are failing.  They suggest bringing the
vehicle in each time the light comes on, or I have rough idling and if we
get lucky the computer may capture the error code to determine which one is
faulty.  The other option is to replace all 6 at $125 each, plus labour and
tax, and unfortunately the warranty expired for this at 3 years.  The first
option is inconvenient, and the second one is costly.  I find it hard to
believe that ignition coils are failing on a vehicle that is just under 4
years old, with low mileage (36200 km).  The technicians at the dealer have
seen this before, on other Pathfinders and Maximas.  Just wondering if
anyone else has run into this problem, and how they have dealt with it.