KASEKENNY1: I wrote the following up based on my take on this O2 Sensor Grounding Issue. This is what I'm going to do before spending a lot more to have O2 Sensors installed. I have a 2000 Infinity QX4, but this also applies to certain Nissan vehicles also. If you approve and would like, we can put this in the Nissan section or wherever, there's lots more Nissan's affected by this than Infinity's. Please let me know if you want to make any changes, it’s correct to the best of my knowledge. I'll let you know my results after I install the DIY repair. Thanks, hope this helps someone else.
OXYGEN SENSOR OBDII CODES AND PROBLEMS THAT ARE OFTEN RELATED TO A FAULTY 02 SENSOR GROUND WIRE
***Applies to Certain NISSAN and INFINITY models with V6 engines.
***This is a VERY common problem.
***There is an EASY FIX!
***Nissan (also makes Infinity) recommends you solve this potential Grounding Issue BEFORE installing new expensive Oxygen (O2) Sensors. If your problem IS the Grounding Issue, the O2 Sensors MAY not be required at all. If the problem is NOT the Ground, you won’t be out much money, especially if you opt for the Do It Yourself (DIY) Repair (BELOW). Fixing this now may also eliminate future grounding problems if your vehicle is on the Nissan list, or is a particular 1996-2004 Infinity SUV with the V6 engine.
VEHICLES AFFECTED:
***NOTE: This information also pertains to INFINITY vehicles of the same year models with V6 (VG33E) engines. Infinity is made by Nissan, and has virtually the same engine, body, etc., but has several luxury upgrades. For example, my 2000 Infinity QX4 is basically the same vehicle as the 2000 Nissan Pathfinder, same engine, etc.
SPECIFIC VEHICLES AFFECTED BY THE GROUNDING PROBLEM:
1996-2000 Pathfinder (R50)
1999-2004 Frontier (V-6 Engine ONLY)
2000-2004 Xterra (V-6 Engine ONLY)
ALSO Infinity SUV’s (Like the QX4) Vehicles 1996-2004 with the V-6 (VG33E) Engine ONLY)
***I’m NOT certain if this fix applies to CARS with the V-6 engine, or if it only applies to the SUV’s.
SPECIFIC OBDII CODES LIST:
***Nissan’s NSB99-004B Service Bulletin (Link Below) lists the individual vehicle Models and Model Year and the Specific OBDII Codes that pertain to each vehicle (Also pertains to similar Infinity models), and there are MANY CODES that may apply. IF you have an O2 Sensor Code, GO TO THE NSB99-004B link (below), find your vehicle and see if YOUR Code applies.
***THE REPAIR OPTIONS:
1. You MAY do a Voltage Drop Test that requires a Volt/Amp Meter and specific instructions to verify if the Ground is actually the problem (Details and Instructions are in the NSB99-004B Link below). OR, A BETTER OPTION (In My Opinion)...
2. Just go ahead and REPLACE the Ground Wire to eliminate it as the cause.
***You have TWO choices to fix the ground:
A.) Buy Nissan’s “sub-harness” ($100 plus) and install it. OR...
B.) Simpler, Easier and Less Expensive: Use the DIY REPAIR: Make your own “sub-harness”, which is basically a ground wire, for $10 or less and install it, which is simple.
THE DIY EASY FIX - INCLUDING A SHORT VIDEO (LINK BELOW):
The DIY fix involves running a New Ground Wire from the Existing Ground Bolt on the Intake Manifold to the NEGATIVE Battery Post. The YouTube Video will show the location of the existing Ground Bolt, and how to route the New Ground Wire to the NEGATIVE Battery Post. It’s possible that your specific route to the battery will be different.
What you need for this fix:
About 3 Feet of 12 or even 10 Gauge wire, Stranded wire is more flexible, so probably better.
TWO “Eyelets”, one size to fit the Ground Bolt, and possibly a different size to fit your NEGATIVE Battery Post connection.
TIPS:
BE CERTAIN you attach the New Ground Wire to the NEGATIVE Battery Post connection!
It is recommended that you SOLDER the eyelets to the New Ground Wire and cover the connections with Heat Shrink Tube.
Be SURE to keep your new Ground Wire away from the exhaust manifold when you route it to the NEGATIVE Battery Post.
CLEAN your connection points at the Intake Manifold and Battery Post connection.
When you install the new Ground Wire, fasten it to existing wires with “cable ties” at a few points to keep it from moving or hanging loose.
LINK to YOUTUBE VIDEO: Search YouTube for:
Nissan truck o2 sensor code FIX! *CHEAP*
OR;
COPY AND PASTE This Link into your browser then CHANGE EACH * TO A SLASH SYMBOL, and hit Enter
(NO spaces).
https:**www.youtube.com*watch?v=yaRHqGK8nVY
LINK to NISSAN’S NSB99-004B SERVICE BULLETIN: This includes a Specific List Of OBDII Codes and which vehicles it pertains to. It does NOT list specific Infinity-affected vehicles. This NSB also includes detailed instructions on how to do the Voltage Drop Test and the Repair with instructions, parts and diagrams.
NOTE: COPY AND PASTE This Link into your browser then CHANGE EACH * TO A SLASH SYMBOL, and hit Enter
(NO spaces).
https:**docs.google.com*document*d*1ow5w8gy6ckdmqdjQ94KtfVR-blgiIiKfuiGb4OHRQ_k*edit
SPONSORED LINKS
Sunday, October 18th, 2020 AT 4:39 PM
