Hours: 07–23 daily
EN
Tune your file

TuningBot DTC Database · v4.37.15

U3501 Control Module Input Power A Circuit Low

Generic (OBD-II) interpretation in the TuningBot DTC database.

U · NetworkNetworkOBD2

What U3501 means

U3501
Control Module Input Power A Circuit Low Generic · network Data confidence 65%

The control module detected that the signal in the Control Module Input Power A circuit stayed below the expected operating range.

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

Related and nearby codes

U35 range
U3500U3502U3503U3504U3505U3506U3507U3508U3509U350AU350BU350CU350DU350EU350FU3510U3511U3512

How to read U3501

U

Network: communication between control units.

3

Generic SAE-standard code: same meaning on every make.

501

Specific fault index within the subsystem.

Frequently asked questions about U3501

What does U3501 mean?

Control Module Input Power A Circuit Low. The control module detected that the signal in the Control Module Input Power A circuit stayed below the expected operating range.

Is U3501 generic or manufacturer-specific?

U3501 is a generic OBD-II code: it has the same meaning on every make and model that follows the SAE standard.

Can TuningBot remove U3501 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 U3501 is removable in your case.

Other file services

Stage 1/2/3 TuningDPF RemovalEGR RemovalAdBlue / SCR RemovalDTC RemovalIMMO OFFSpeed Limiter (Vmax)

Understand the system behind this code: Diagnostic Strategy and DTC Logic

ECU tuningDyno-tested results by model and engine See the results →

← Search the full DTC database