P0328Powertrain
Knock sensor (bank 1) — high signal
Where to start
The knock sensor signal is too high. As with P0326, the tightening torque and the connector are more often to blame than the sensor. Check them before buying a part.
A code is not a diagnosis. It says which check failed, not which part to replace. Clearing it without repair only means the car will report it again in a few trips.
How to put together a report a mechanic will actually read
We have a detailed piece on thisKnock sensor: P0324, P0325, P0327, P0328
How the code is built
Letter — the systemPowertrain: engine and transmission
Common or the maker's ownGeneric code: the same on every car
Which part of the engineIgnition system and misfires
Number of the faultThe serial number inside that group — it does not say how serious the fault is
All codes in «Ignition system and misfires»
How the app helps
CarScan reads this code from your car through an OBD-II adapter, shows whether it is active now or only stored, names the module that reported it, and puts it into a plain-text report for your mechanic.