P0030 Fuel Pressure Sensor Circuit Malfunction – Causes and Troubleshooting

it's the blue loomed wire plugged in near your passenger side strut tower, you can see it go down to the header along the passenger side head ... Watch our latest video • https://youtu.be/9n5qms1o9pw?si=mYckc4ne5SQujLdv ▷Subscribe for New Videos Every Day: ... OBD-II Code P0030 is defined as a HO2S Heater Control Circuit. This means that the oxygen sensor heater circuit is not functioning properly. TC 47.5*70.65*9 NK701B/C/C/// Volvo C70 - Code P0030 - CEL is on with P0030. I understand it's the bank 1 sensor 1 heater circuit. Possible causes are vacuum leak, ... Possible Solutions · Inspect and test O2 sensor heater circuit as per repair manual · Inspect and test wiring harness as per wiring diagram · Replace ECM if O2 ... A new O2 sensor is about $40 shipped. On these engines Bank 1 is the driver's side. The sensor is located at the top of the exhaust manifold. 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 ... 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 ... 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 ...