codes p1430 and p0140 01 pathy...any suggestions???

[bigballerhanh]

I recently got the p0430 code and p0140 code. Car drives wonderful! I have tried erasing it with the scan tool 2 but it came back after about 40 miles. I then disconnected the battery overnight and it erased but came back 300 miles later. I know that the p0430 code is for the cat converter and is a common code in the 01 pathys and the p0140 is for the rear 02 sensor. I dont want to replace the cat unless i know for sure it needs to be replaced. I hate to go to the dealer. I inquired about getting the ecu reprogrammed and they said they would have to check the suv over $$$$$$ also, they said if it is the ecu, it will cost 99.00. Are these two codes related or is one caused by another? Any suggestions as to where I should attack this problem?thanks
Modified by bigballerhanh at 6:32 PM 4/21/2009

[pathfinder9035]

its just your oxygen sensor in bank 1. replace that and get it reflashed at the dealer and done.

[bigballerhanh]

Is the p0140 code 02 sensor bank1 #2 causing the p0430 code? Do you know what brand, the cost and place of a good 02 sensor other than the dealer? How long for labor, or how much should I expect to pay a mechanic to replace the 02 sensor?

thanks

[Chuck Tribolet]

You may have two problems. FSM sez P0140 is bank 1, and P0430 is "left bank,B2". Different banks, I thnk. I'd chase the P0140 first.

If you replace the O2 sensor the FSM talks about at special tool to clean thethreads. I suspect that's just the right tap, and if somebody figures out whattap, it should be a sticky. It will be 1/4 the price from McMaster, 1/8 from Napa IF Napa carries it.

The reflash is important -- it keeps the problem from coming back. IMHO, itshould have been a recall item -- I had a sensor replaced on warantee thatprobably would not have failed with an early reflash. "Hey, stop by for 10minutes, so we can upgrade you ECU for better reliability."

[longhornsqx4]

Well if the 02 threads are the same as all 02 threads, its M18 X 1.25

I threaded about 500 02 sensor bungs tonight on the cnc lathe lol, but there mainly sold to the honda/bike guys