Code P0030 reports incorrect operation of the heater circuit of oxygen sensor 1, bank 1. On the Ford Fiesta 1.25 it lights the engine warning light without affecting how the vehicle runs.
- System
- Fuel injection
- Component
- Upstream oxygen sensor
- Fault
- The engine warning light comes on, with the vehicle nevertheless running normally.
- Typical symptoms
-
- Engine warning light on
- The vehicle runs normally
- No noticeable loss of power
- Vehicles affected
-
- Ford Fiesta 1.25 16v
- Main code
-
- P0030 Oxygen sensor heater circuit 1, bank 1, incorrect operation
- Solution
-
See the repair procedure verified on Sema Repair.
The cause and the repair are on Sema Repair
On Sema Repair this code is linked to verified case studies, with the confirmed cause case by case, the job step by step, indicative times, the manufacturer's notes and a photograph of the component with the point of intervention highlighted.