I've been randomly getting the folowing two codes since I bought my car:

P0130
• The PCM monitors the front HO2S impedance when under the front HO2S heater control. If the impedance is more than 500 ohms, the PCM determines that there is a front HO2S circuit problem.

P0134
• The powertrain control module (PCM) supplies a bias voltage of about 450 mV between the heated oxygen sensor (HO2S) high signal and low signal circuits. When measured with a DMM, this may display as low as 320 mV. The oxygen sensor varies the voltage within a range of about 1,000 mV when the exhaust is rich, down through about 10 mV when exhaust is lean. The PCM constantly monitors the HO2S signal during Closed Loop operation and compensates for a rich or lean condition by decreasing or increasing injector pulse width as necessary. If the HO2S voltage remains at or near the 450 mV bias for an extended period of time, this diagnostic trouble code (DTC) will be set, indicating an open sensor signal or sensor low circuit.

Both are related to the same thing (I looked them up) was just wondering if anyone knew what to do to fix them for good. Thanks

 

I've had the same issue with mine I bought the car new around 12,000 miles check engine light came on same code's some times misfires on all cylinders can't feel it but will read it been to the dealer many times there stumped as well!

 

I just log it and reset it with my interceptor, but they randomly pop up while the car appears to be running perfectly fine.

 

Do you have any idea if your dealership contacted technical assistance when they had your vehicle?

Thanks,
Laura
Chevrolet Customer Service

 

Ya they said they called Them.

 

Sounds to me like your front O2 sensor craped out.
Id start there with swaping it out with a new one.

 

you seem to have enough info, test the wires from o2 sensor back to pcm if they are ok replace o2. if you still get a code it will be a pcm related problem..

 

The front o2 sensor is located in the header, correct? Would I only get this error code because of problems with it, or could it be setting off a code due to airflow or something? Thanks