Empowering Vehicle Owners The P0030 Troubleshooting Guide

What causes the P0030 code? Generally, if the code is cleared and reset, and the engine warning light comes back on along with the OBD-II code, this means that ... Claim your FREE engine code eraser https://free.nonda.co ============================= nonda Auto DIY Center is the biggest Auto DIY ... The code means that there is a problem with the heater element circuit of the heated oxygen sensor. Water getting inside the heated oxygen ... 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 ... A P0030 code refers to an issue with one of your engine's primary oxygen sensors. The specific O2 sensor in question is a heated oxygen sensor ... The P0030 is an oxygen sensor heater code. The ECU turns the heater on to heat up the sensor faster when starting cold. It's one of two things. Either the wire for that circuit between the ECM and the O2 sensor is broken and making intermittent contact or the heater element ... It sounds to me that you have an electric problem. Perhaps the cable is old or the connector pins were bent resulting in a short circuit... Best line of sight is to replace the O2 sensor, disconnect the battery for a 5 mins, reinstall the batt lugs, fire up and let it idle for 10 mins and then ... Your ECU detected a fault with the heater circuit. That probably means you will need a new O2 sensor.