Check Engine Light Due to Poor Exhaust Manifold Ground on Infiniti QX4

Problem Description and Possible Solution

The Check Engine Light may illuminate indicating a fault with two or more oxygen sensors. Our technicians tell us this may be caused by a poor ground between the cylinder head and the exhaust manifold.

Problem Data
RepairPal Verified
Average mileage: (–)
1 model year affected: 1997
1 person reported this problem