Code Definition

P3262 — Heated Oxygen sensors 2 banks 1 & 2 interchanged (check for reversed wiring)

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

About P3262

P3262 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 P3262 is stored, the module has detected 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.

P3262 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 engine control module (ECM) sets this code when it detects that the signal inputs from the downstream (post-catalyst) oxygen sensors on Bank 1 and Bank 2 are reversed. This usually occurs due to incorrect sensor installation or wiring being swapped between the two banks. The ECM relies on these sensors to monitor catalyst efficiency, and when the inputs do not correspond to expected exhaust gas conditions for each bank, it triggers this fault.

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