P0131 - O2 Circuit Low Voltage (Bank 1, Sensor 1) - DTC Chart

P0131 - O2 CIRCUIT LOW VOLTAGE (BANK 1, SENSOR 1) - DTC CHART

Description: This DTC sets when a concern is detected with one of the circuits used to determine the oxygen content in the exhaust gas.
Possible Causes: UO2S11 circuit short to ground UO2SGREF11 circuit short to ground UO2SPC11 circuit short to ground UO2SPCT11 circuit short to ground Damaged universal heated oxygen sensor bank 1, sensor 1 (HO2S11)
Diagnostic Aids: An engine stall condition or an extremely rich air to fuel ratio may set this DTC. Diagnose any engine stall or rich air to fuel ratio concerns before diagnosing this DTC. Inspect the connectors for signs of damage, water intrusion or corrosion.
Application	Key On Engine Off	Key On Engine Running	Continuous Memory
All	GO to Pinpoint Test DZ .