Elantra error codes

Here is the 36 and 38, but you can find all the codes and some give you brand specific.

P0036: O2 Sensor 2 bank 1, heater control circuit malfunction P0038: O2 sensor 2 bank 1, heater control circuit high P0137: O2 sensor 2 bank 1, low voltage

Suspect a defective downstream oxygen sensor, or improperly routed wiring damaged on the axle shaft.

P0133: O2 Sensor 1 bank 1, slow response

Primarily suspect an exhaust leak in the flexpipe, but could also be caused by a defective sensor.

Thanks for the replies. I had it fixed and my receipt says they replaced "heater sensor B1 S2". They cleared the codes, test drove it and said it remained clear. I'll bring it back to the smog shop tomorrow and see if they concur.

You may want to wait a day or three, or at least ask before you get tested. Some cars take a while to be able to give proper readings for the test.

Thanks for the tip. I'll post back with results :-)

Not just the amount, but the particular type and sequence of driving.

Thanks again for all the responses. My car passed the second smog check no problem. Now I have to work on the upholstery :-)