U0326Software incompatibility - immobilizer control module
Generic (OBD-II) interpretation in the TuningBot DTC database.
U · NetworkImmobilizerOBD2
What U0326 means
U0326
Software incompatibility - immobilizer control module
Generic · immobilizer
Data confidence78%
The control module detected a fault associated with the Software incompatibility - immobilizer control module circuit or function; the stored code identifies the affected component rather than a single failure mode.
Symptoms
Engine may crank but not start
Immobilizer warning lamp active
Possible causes
Unrecognized or unprogrammed key/transponder
Antenna ring or reader fault
Immobilizer data mismatch between modules after part replacement
Wiring fault
Recommended checks
Test with all available keys
Read immobilizer status and stored key count
Check antenna/reader circuits
Verify component matching after any module or key replacement
Generic SAE-standard code: same meaning on every make.
326
Specific fault index within the subsystem.
Frequently asked questions about U0326
What does U0326 mean?
Software incompatibility - immobilizer control module. The control module detected a fault associated with the Software incompatibility - immobilizer control module circuit or function; the stored code identifies the affected component rather than a single failure mode.
Is U0326 generic or manufacturer-specific?
U0326 is a generic OBD-II code: it has the same meaning on every make and model that follows the SAE standard.
Can TuningBot remove U0326 at file level?
Not guaranteed. Powertrain (P) codes can be reliably disabled in the ECU calibration, but body, chassis and network codes depend on the specific control unit and how the fault is implemented - some can be handled, some cannot. Ask for a quote and our engineers will check your file and tell you, free of charge, whether U0326 is removable in your case.
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