Replaced Oxygen Sensors - Still getting errors 2003 4R PLEASE HELP!!!

[4rssassin]

2003 4Runner

So I replaced all 4 oxygen sensors. Had them reset the check engine lights and the lights came back on. I took it to inspection and the following errors came up:

P2239 O2 Sensor Positive Current Control Circuit High Bank 1 Sensor 1

P2242 O2 Sensor Positive Current Control Circuit High Bank 2 Sensor 1

P2252 O2 Sensor Negative Current Control Circuit LOW Bank 1 Sensor 1

P2255 O2 Sensor Negative Current Control Circuit LOW Bank 2 Sensor 1


I bought this cheap thing here:
Replacement Before Catalytic Converter Oxygen Sensor Universal, 4-wire, heated, 15 cm long, butt type connector

I checked and all 4 are wired properly as per the manuals instructions and all 4 are wired exactly the same.


Any ideas on how I can fix this without paying hundreds for it? Thanks!

[riverider]

I think the O2 sensor codes are a BIG scam to make the dealership stealing service Dept's money. If you have replaced them and still get a problem code, something is mighty wrong.

I got this same code on my 98 Maxima at 16K, and it is running very good, with no loss of of power or any increase in fuel use.

So I am doing nothing till I notice a real problem, or my Maxima quits.

I understand in some states you are required to have the inspection, and a problem light is a problem. That's another state scam IMHO.

[jetwhine]

4rssasin,

Try disconnecting the negative battery cable for about 1 minute then reconnect. The codes may have not reset in the normal fashion. This might help, the problem might be fixed.

[chuckoff]

Should replace sensors with Denso parts. Toyotas don't like the universal cheapies.

[EdW]

Second that. Unfortunately many imports don't like the aftermarket cheaper O2 sensors. It's too bad you bought all 4, but for certain replacement parts, it's best to go OEM. They tend to last much longer too...

[tdewitt34]

your 02 sensors are hooked up wrong!