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 every code is linked to verified fault cases. The case study gathers, where available, the information you need to reach the repair:
- Verified cause of the fault
- Step-by-step repair procedure
- Indicative repair times
- Manufacturer's notes
- Photo of the component with the repair point marked