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Infiniti QX4 Problems

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.

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Infiniti QX4 Vehicles With This Problem

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Average mileage: (–)
1 model year affected: 1997
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