p1131
Moderate
Ford · Sedans & Cars
Oxygen Sensor Circuit No Activity (Bank 1 Sensor 1)
Quick Answer
Error code P1131 on your Ford Sedans & Cars means: Oxygen Sensor Circuit No Activity (Bank 1 Sensor 1). This is usually fixable — see the step-by-step guide below.
Affected Models
Applies to all models
Likely Causes
How to Fix It
1
Check oxygen sensor wiring
2
Test sensor voltage signal
3
Inspect connector integrity
4
Check ECM for faults
5
Replace oxygen sensor
Pro Tip
This fix requires some technical knowledge. If you're unsure about any step, consider contacting support or a qualified technician.
Parts You May Need
Oxygen sensor
Wiring harness (optional)
Connectors (optional)
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