Posts Tagged: what is wrong with oxygen sensor

P0130 code: What it means

Learn what a P0130 code means and how to fix it A P0130 is defined as: Oxygen Sensor Circuit Malfunction (Bank 1 Sensor 1). This sensor is located on the engine bank that houses the #1 cylinder and is located BEFORE the catalytic converter. The code is telling you that the ECM is seeing an abnormal condition in the circuit to the oxygen sensor, as opposed to the circuit from the oxygen sensor heater. The PCM sends a reference voltage (usually 5 volts) to the variable resistor in the oxygen … Read More