Unleash Your Vehicle's Power Conquer P0030

That CEL code is pointing to the front, upstream A/F - Air/Fuel O2 sensor... Bank 1, Sensor 1. If you're going to replace it, most members would recommend ... If new sensor has good heater voltage but signal still = 0.4v DC, then disconnect the yellow signal from the DME and see if the voltage changes ... The code references a heater circuit problem. So, can the IID tell me if I have power, ground and resistance? Looks like the connector is really difficult to ... The code says circuit not sensor is failing a test. Check the wiring and/or connectors. Don't mess with Binky Bear! may have been damaged when the DP was changed? make sure they plugged it back in ok. check your DP bolts are tight and sensor has not come loose ... I am currently getting a P0030 code "Heater Control Circuit (Bank 1, Sensor 1)" after replacing the o2 sensor. I have checked the live data and ... What does the code “P0030” mean? It means that a problem has been detected with the upstream oxygen sensor on engine cylinder bank 1. What causes it to appear? Default Re: P0030 and P0036 issues. OBD2 - OBDII Code P0036 - HO2S Heater Control Circuit Bank 1 Sensor 2 | Engine-Codes.com read this. looks like you need a ... The car is getting the intermittent stumble like its missing when it is cold. Wiring looks good. No breaks or cuts visibly present. Double check connections, clear the code, unhook the battery for a while, reconnect the bat and drive it. If it doesn't go away after 10-20 min of driving then ...