The SES light is on, and it's throwing codes P0140 and P0158, so it won't pass smog (I live in CA).
I figured $3,500 was a fair starting point. Any advice would be greatly appreciated. Thanks!
Thanks for the reply! I previously did some research about the codes, and found the TSB on the sensors. Took it to a Nissan dealership and had them install the rear left and right sensors, and reflash the ECM, per the TSB's instructions. $600 and no luck.Towncivilian wrote:P0140 and P0158 are codes for the passenger's side rear oxygen sensor and can be solved with a ~$55 direct-fit Bosch sensor from RockAuto. Bosch is the original manufacturer for the sensor. Purchase this sensor online at RockAuto (enter 1288608810530767 in the "Where did you hear about us?" box in your cart for 5% off). Consider adding a 20oz. bottle of Chevron Techron fuel system cleaner to help pass emissions after replacing your oxygen sensor.
Was your Pathfinder inspected for the strut housing corrosion recall and repaired if required?
Welcome to NICO.
I had the replacement done in 2009. I believe both sides were replaced because a code was popping up for the other side, as well. The dealership was indeed baffled by the cause of the issue, and stated that they thought the upper head was not properly getting oil, and that they would need to tear the engine apart to determine the cause of the codes (which they quoted at more than $3,000... forget that). They said that my engine was probably a ticking time bomb and that it could blow at any minute. Despite their claims, it has run fine for at least 30k more miles.Towncivilian wrote:Ooh, that is very odd that the replacement sensor and ECM reflash did not help the issue. Was an OEM sensor used? Was the dealer baffled why the TSB did not resolve the issue? Why were both sensors replaced, instead of just one?
Here is a link to the recall: http://www.nicoclub.com/FSM/Pathfinder/ ... 4-1111.pdf
Your dealer certainly knows about it and should have told you at your last visit (unless your last visit was before July 2011).
I'll look into replacing the rear sensor, thanks! I would definitely like to resolve the codes before selling, if possible. I'm sure it would get a lot more attention and have a lot more value. Heck, I would probably keep it if I could smog it, as my other vehicle is a boring economy car. Good idea about checking into the safety recalls.Towncivilian wrote:Theoretically, unless you applied threadlocker on the power valve screws, your engine could be a ticking time b0mb. It's possible that threadlocker was not applied to these screws from the factory, and they could back out and vibrate loose and become ingested by the engine, potentially causing engine damage and catalytic converter damage (or it could do nothing at all).
If you are intent on selling this vehicle still, I would chance trying to replace the rear sensor I mentioned with a new Bosch direct-fit OEM sensor and see if it happens to solve your codes. The $55-ish investment might be worth more since the SES light won't be lit, and a buyer/dealer may pay more for the vehicle as a result. Definitely get your vehicle inspected for any outstanding safety recalls and repaired if necessary.
Are your seatbelts slow at retracting? They can be replaced for free under warranty (you have a lifetime warranty for them), and that may increase resale value as well. See this thread for more info.
Out of curiosity, why are you selling your Pathfinder?
Didn't I read on here a while back that manual transmission Pathfinders do not have the power valves?Towncivilian wrote:Theoretically, unless you applied threadlocker on the power valve screws, your engine could be a ticking time b0mb. It's possible that threadlocker was not applied to these screws from the factory, and they could back out and vibrate loose and become ingested by the engine, potentially causing engine damage and catalytic converter damage (or it could do nothing at all).