Unleash Unstoppable Performance The P0030 Solution

P0030 HO2S Heater Control Circuit Bank 1 Sensor 1. (1/1). siphonfilter: http://engine-codes.com/p0030.html. Hi, I have a 2003 Subaru Legacy, I replaced the ... 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 ... Find your TRQ parts here: http://1aau.to/m/ETCG0030 Eric the Car Guy is here! He's visiting TRQ to explain check engine codes to you! Sensor 1 is the front/upstream Air/Fuel sensor & sensor 2 is the rear/downstream O2 sensor, which monitors the efficiency of the CAT. The check engine light came on the other day and I'm throwing a code of P0030 which is Bank 1 Sensor 1 (driver's side upstream pre-cat) O2 ... Here are all the codes, all of which are for the upstream (front) sensors. He said he disabled the downstream (back) ones. 2015 WRX Base, no mods, 23.5k miles. I currently have a check engine code P0030 on the car, which is the third time I've had this code in the last 2 months. This error indicates that it is not reaching temperature (the sensor, not the engine) , which is usually a failure of the O2 sensor. 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 ... 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 ...