Okay. Great. Here are the code description for each of you P codes. The B code is an interior electrical code and not related to your flashing check engine light.
The P codes are your issue. Please review the steps to diagnose these closely because if the o2 sensors shorted out, then it could have damaged the circuit in the ECM and that will require replacement as well. More than likely you have a faulty o2 sensor because as you will see the ECM needs to see a difference in the upstream and downstream sensors. When it doesn't see a change in the upstream it sets the P0134. When it does not see a difference in the downstream it sets the P0140.
However, I just to make sure you don't just put the sensors in it and then it is still not fixed in the event it needs an ECM.
Lastly, you will need a scan tool in order to monitor the sensor data to properly diagnose it. If you don't have one, you could buy one, possibly find a friend with one, or have it looked at by a shop. Again, you could just put the sensors in it but without running through the tests you won't know if that is going to fix it.
Please let me know if you need more information. Thanks
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Sunday, June 16th, 2019 AT 9:31 AM