P1131 OBD Code Definition:
P1131 Lack Of HO2S Switch – Sensor Indicates Lean
P1131 OBD Code Description:
Lack Of HO2S Switch – Sensor Indicates Lean is one of the Definitions for the P1131; however your vehicle’s manufacturer may have a different Definition for the P1131 code. Please check below for your specific make.
Possible Symptoms
- Malfunction Indicator Light (MIL) ON
-
Engine Light ON (or Service Engine Soon Warning Light)
Possible Causes
- Wiring and/or Connector(s) from/to Oxygen/Lambda Sensor Bank 2 Sensor 1 faulty
- Oxygen/Lambda Sensor Bank 2 Sensor 1 faulty
Possible Solutions
- Check Wiring and/or Connector(s) from/to Oxygen/Lambda Sensor Bank 2 Sensor 1
- Check/Replace Oxygen/Lambda Sensor Bank 2 Sensor 1
- Check Measuring Value Blocks (MVB)
- Perform Output Test/Basic Setting