The check engine light is on and when I turn the key to get the code it gives me P0138.
for thecode P0138 i ve findfollow" 02 SENSOR CIRCUIT HIGH VOLTAGE BANK 1 SENSOR 2" ! ist that right for a 2003 Dodgeram with the 5.7 hemi .
and what i have to do !

Thanks
martin

 

Martin,
I have the same code...only and always happens when it gets rainy or wet. From what I can tell, this is the right rear downstream O2 sensor. (The one after the CAT). Hope this helps.

 

O2 Sensor Circuit High Voltage (Bank 1 Sensor 2)thats right....try replacing the sensor....not very expensive

 

Hey HEMIYELLOW,
Just how many O2 sensors are there? And just what do you call the right side? Is that the 2-4-6-8 cylinder side? Tnx

 

i had this code too a while ago. turns out it wasa loose harness, so check your harness before you go replacing your sensor.

 

on the 5.7 there's 4...i dunno bout the 4.7 but i would assume 4 as well.....too lazy to find my service manual CD's and look lol

 

i've always known right side as driver side....bank 1 i'm pretty sure is driver side, bank 2 is pass side

 

Bank 1 is pass side, sensor #2 is the rear one.

 

Now I'm really confused! Left, Right, Bank 1, Bank 2. Help!

 

I stand corrected and a little embarassed.

Just checked the manual and bank 1 is the driver side.

The 04 hemi has 2 cats, therefore 4 sensors.

When I last looked this up it was for my 98 dak with only 1 cat.