Code Definition

P1196 — O2S Heater Circuit Bank 1 Sensor 1 Electrical Malfunction

System: Powertrain  |  Type: Manufacturer-Specific  |  Make: Audi

About P1196

P1196 is a manufacturer-specific powertrain diagnostic trouble code recorded for Audi vehicles. It belongs to the P-prefix family of codes, which covers engine, transmission, emissions, or fuel-system faults.

When P1196 is stored, the module has detected a bank-specific fault, meaning it applies only to one cylinder bank of a multi-bank engine; and a sensor-related fault — the reported value from the named sensor is out of spec.

Scanning & clearing: A generic OBD-II scan tool will usually read and clear powertrain (P) codes. For live data, freeze-frame capture, and bi-directional tests you may need a more capable scan tool that supports the vehicle's ECM protocol.

P1196 is a manufacturer-specific code. The same code string on a different make may have a different meaning. Always confirm the code's definition against the vehicle's service information for the specific make and model under test.

Code Information

The oxygen sensor heater is a resistive element built into the sensor body that brings the sensing element up to its operating temperature of approximately 350 degrees Celsius within seconds of a cold start, allowing closed loop fuel control long before exhaust heat alone would achieve it. On Audi and Volkswagen applications the Engine Control Module supplies the heater with battery voltage through a fuse and in many cases an oxygen sensor relay, then switches the ground side with a pulse width modulated output while monitoring current flow and circuit voltage. DTC P1196 is stored when the ECM...

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