P0131

DTC P0131: A Low Voltage Problem In The Primary Heated Oxygen Sensor (HO2S) (Sensor 1) Circuit.

Except D16Y5 - 1.6L SOHC VTEC-E with Manual Trans:

The Heated Oxygen Sensors (HO2S) detect the oxygen content in the exhaust gas and signals the ECM/PCM. In operation, the ECM/PCM receives the signals from the sensor and varies the duration during which fuel is injected. To stabilize the sensor's output, the sensor has an internal heater. The Primary HO2S (Sensor 1) is installed in exhaust manifold (D16Y8, B16A2 engine: exhaust pipe A).

Part 1 Of 2 (Except D16Y5 - 1.6L SOHC VTEC-E with Manual Trans):

Part 2 Of 2 (Except D16Y5 - 1.6L SOHC VTEC-E with Manual Trans):