Generic (OBD-II) interpretation in the TuningBot DTC database.
U · NetworkNetworkOBD2
What U0901 means
U0901
Invalid Data from Ion Sense Module
Generic · network
Data confidence65%
The control module registered the fault condition described as "Invalid Data from Ion Sense Module".
Symptoms
Multiple warning lamps possible
Functions of the affected module unavailable
Possible causes
CAN bus wiring fault (open, short, chafed harness)
Faulty control module loading the bus
Connector or terminal corrosion
Power supply or ground fault of a module
Recommended checks
Perform a full-module scan to map which modules communicate
Check CAN bus resistance and voltages at the diagnostic connector
Inspect wiring and connectors of the affected module
Check module power supply and grounds
Disconnect suspect modules one at a time only with a documented procedure
How to read U0901
U
Network: communication between control units.
0
Generic SAE-standard code: same meaning on every make.
901
Specific fault index within the subsystem.
Frequently asked questions about U0901
What does U0901 mean?
Invalid Data from Ion Sense Module. The control module registered the fault condition described as "Invalid Data from Ion Sense Module".
Is U0901 generic or manufacturer-specific?
U0901 is a generic OBD-II code: it has the same meaning on every make and model that follows the SAE standard.
Can TuningBot remove U0901 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 U0901 is removable in your case.
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