so about a few days ago my check engine light came on. the error code is p0038..."P0038-O2 SENSOR 1/2 HEATER CIRCUIT HIGH "

what usually causes this and what are some good fixes?

thanks.

 

DON'T KNOW!

 

then why post?

 

Your heated O2 sensor has a heeater problem most likely. Most likely time to change out your HO2 sensor. Most cars actually have only primary heated. Not sure for this application but would thus assume the primary sensor or otherwise known as precat O2.

With a sensor high you have high voltage back to the pcm thus most likely shorted heating element.

There is an outside chance of a cross short to the ground circuit of your O2 sensor. If after replacing your sensor you still have a problem then start looking for this.

Just go to you auto parts store and get an HO2 sensor (Should be a 22mm or 7/8" -- same size) and replace the Primary first and then if that does not solve it then see if you have a heated postcat HO2 if not then see above.

 

I have an 04 dodge hemi with the 5.7litre

I replaced both heated o2 sensors behind the catalytic converter. I have cleared the codes and they just keep popping up. The check engine light and the p0038 code are being displayed on the odbII computer. A pending code is also showing up for this too. Does it just take time for the light to clear. I also tried resetting the pcm by pulling fuse 23 and messing with the ignition switch. Any Ideas? Short??

 

You have a bad PCM.