U3504Control Module Input Power B Circuit Range/Performance
Generic (OBD-II) interpretation in the TuningBot DTC database.
U · NetworkSoftwareOBD2
What U3504 means
U3504
Control Module Input Power B Circuit Range/Performance
Generic · software
Data confidence65%
The control module judged the Control Module Input Power B signal implausible: it stayed inside electrical limits but did not match the value expected for the current operating conditions.
Symptoms
MIL illuminated
Symptoms depend on the affected internal function
Possible causes
Internal control module hardware fault
Control module supply voltage or ground fault
Software/coding fault after programming
In rare cases, interference from wiring faults
Recommended checks
Check control module power supplies and grounds first
Check battery condition and charging voltage
Verify software version and check OEM bulletins
Clear the code and retest under the original conditions
Only after supply-side checks, consider module assessment
Generic SAE-standard code: same meaning on every make.
504
Specific fault index within the subsystem.
Frequently asked questions about U3504
What does U3504 mean?
Control Module Input Power B Circuit Range/Performance. The control module judged the Control Module Input Power B signal implausible: it stayed inside electrical limits but did not match the value expected for the current operating conditions.
Is U3504 generic or manufacturer-specific?
U3504 is a generic OBD-II code: it has the same meaning on every make and model that follows the SAE standard.
Can TuningBot remove U3504 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 U3504 is removable in your case.
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