Code Definition

P1269 — fuel injector 4 wrong signal

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

About P1269

P1269 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.

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.

P1269 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 monitors the electrical response of each injector output during every injection event, comparing the current rise, the switching edges and the inductive collapse against the profile it expects for the injector fitted to that cylinder. DTC P1269 is stored when the module sees a signal on the cylinder 4 injector circuit that is present but does not match what it commanded, making this a plausibility fault rather than a straightforward open or short circuit. Typical causes include an injector of the wrong type or resistance fitted to cylinder 4, injector connectors swapp...

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