P0030 Code Enigma Solved A Comprehensive Guide to Diagnosis and Repair

Here are all the codes, all of which are for the upstream (front) sensors. He said he disabled the downstream (back) ones. The code is telling you that the heating element in the lambda is open circuit. Probably the sensor itself but worth looking at the wiring first. Check for improper connection of the O2 sensor or a pinched cable. Sometimes O2 sensor just die so it's a good idea to try a known working one ... Car Ford KA 2003 petrol 1299CC The engine runs fine, but the engine check light is on. When I run a scan its comes up with P0030 H02S Heater ... Code P0030 means “HO2S Heater Control Circuit (Bank 1, Sensor 1).” The powertrain control module (PCM) logs this error code in your car when it senses a fault. The Heated Oxygen Sensor is not heating. S may mean the Secondary sensor which is after the cat. If you had exhaust problems, you may have a damaged wiring ... Two codes show on my car first being the P0030 code for sensor 1 bank 1 in my manifold, other code being P0420 code, I replaced the bank 1 sensor 1 o2 sensor ... A code P0300 may mean that one or more of the following has happened: Faulty spark plugs or wires, Faulty coil (pack), Faulty oxygen sensor(s), Faulty fuel ... ... code I had. To my surprise it was a p0030 code out of everything. So I cleared the code and there it was after every ignition cycle. I went ... Hey so I threw a p0030 code the other day. O2 Heater circuit failure. Cleared it and checked for 12v to sensors. All seems well but it threw ...