[LucasAry]

Originally Posted by gbalthrop

The BMW FC 2E69 indicates a fault in the Double Knock Sensor OR its wiring/connectors between the two sensor "pickups" (on the Left side of the block) and the DME Connector X60005 on the N54 engine or X60002 on the N55 engine. Here is a Web page discussing P1327:
https://www.autocodes.com/p1327_bmw.html

There are THREE P-codes associated with the single 2E69 BMW FC: P1327, P1328 & P135B. Each of those codes have a definition related to the signal received by the DME from the Double Knock Sensor, and that signal is affected by wiring & connector faults. ALWAYS check wiring and connectors for faults including loose, damaged or corroded connectors BEFORE assuming the sensor has failed.

So check the connectors and wiring between the sensor unit and the DME. Here is the TIS circuit diagram for the N54 Engine:
https://www.newtis.info/tisv2/a/en/e...ontrol/oqj6nek

Here is the TIS circuit diagram for the N55 engine:
https://www.newtis.info/tisv2/a/en/e...ntrol/CkNJ0Bkn

It would be helpful to put full vehicle identification (model, year, chassis & engine) in your Member Info, or at least in your post.

George

+1