P0130 Oxygen sensor ahead of catalytic converter P0131 Oxygen sensor ahead of catalytic converter P0132 Oxygen sensor ahead of catalytic converter
Okay, let's break down those OBD-II trouble codes related to your **Oxygen Sensor (O2)** in the exhaust system upstream of the catalytic converter. These three codes all pertain to the same basic part: the oxygen sensor located ahead of the catalytic converter. They are variations indicating different specific issues with that sensor or its circuits. **Porsche Diagnostic Trouble Code: P0130** * **What it means:** This code indicates a malfunction in your Porsche's upstream O2 system. * It points to an issue likely related to the **O2 Sensor (Sensor 1)** located ahead of the catalytic converter. The PCM interprets this as either no signal or an open circuit condition for its heater circuits OR inconsistent switching behavior during fuel trim control, especially seen on Porsches and other late-model systems. * **Common Causes:** * Damaged or failed upstream O2 sensor probe (Sensor 1). * C...