FORD FUSION 1.6 PETROL 09 PLATE-Possible new upstream sensor req'd?

Question

Re Ford Fusion query details taken off diagnostic report but problem light seems to have come on again & engine seems sluggish initially
Had EMS checked re any DTC's. One stored P0030 Oxyg Sensor Heater control unit & fault cleared, but now warning light back on, so assume new upstream sensor req'd?

Answer 1

HI there,

I would start with a new O2 sensor. Rarely does clearing the codes work when the code is for the heater circuit on the sensor. Normally the heater inside the sensor burns out and that requires replacing the sensor to solve the problem.