Code Definition

P1153 — Heated Oxygen Sensor 2 banks 1 & 2 signals reversed (wrong wiring connections)

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

About P1153

P1153 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 P1153 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.

P1153 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

This code monitors the relationship between the oxygen sensor signals on Bank 1 and Bank 2 and compares each sensor response to the fuelling changes commanded on its bank. DTC P1153 is set when the Engine Control Module (ECM) detects that the Bank 1 and Bank 2 oxygen sensor signals appear reversed, meaning the sensor responding to Bank 1 fuelling is the one wired as Bank 2 and the reverse, which indicates the sensor connectors or wiring have been crossed. This most often follows a repair where the two oxygen sensor connectors were swapped, since the banks use identical sensors and connectors. ...

Join TaT to view the complete code information and diagnostic details.

Quick Facts