2000 Pathfinder O2 codes, P0131, P0151

Question

I initially had all 4 O2 sensors codes come up, with Crankshaft and Camshaft Sensors, and Air Intake sensor codes. All these parts were changed, including the distributor.
Rode it for a day, and then the 2 O2 sensor codes came back, with low voltage indications.
There is a little exhaust leak, could that be causing it?
Or something else?
Thanks for any help:)

Answer 1

Hi there,

There is actually a service bulletin for these 2 codes running together. Nissan has a sub harness for better grounding. You could go through and check all your engine grounds, it's likely the sensors aren't grounded well and that is causing the problem.