About a month ago, the "Service Engine Soon" light came on, and using Haynes Repair Manual, the flash code was 0412 - Upstream oxygen sensor high voltage fault (right bank). After resetting the ECU serveral times, the "Service Engine Soon" light would come back on after approx. driving 300 miles in a week. I replaced both front oxygen sensors with Bosch ones and reset the SES light about a week ago.
Now I get two flash codes, 0412 and 0210 - Fuel injection system lean(left bank)
Does any know the correct repair for flash codes 0412 and 0210 ?

The 98 SE has approx 42,000 miles and seems to run fine.

Thanks

 

Sounds like a faulty O2 sensor, and or the harness and clips. Make sure you changed the correct O2 sensor (the RIGHT bank is more towards the back of the car on the Y pipe (not the cat). Also the second code should go away after the O2 sensor problem is fixed.