U3035

A model year appears here because the code is named in its record, not because every one of these vehicles sets it. Counts are mentions in the federal files, not failure rates — nobody publishes the denominator.

Service bulletins and campaigns whose filed summary names U3035. Quoting the document number at a service desk is often the fastest route to a diagnosis someone has already written down.

• SSM 53759
  2025-05-12 · Unknown Or Other
• After replacement of any TRON module, the gateway module (GWM) and the TRON capable modules can set diagnostic trouble codes (DTCs) U211A, U211B, U211C, U3034, U3035, U3036, U35D9, U35DA and/or U35DB if the secret authentication security keys are not aligned between the modules, a loss of communication is occurring between modules and/or a module is not responding. This may be a result of missing
• SSM 53638
  2025-04-14 · Unknown Or Other
• After replacement of any TRON module, the gateway module (GWM) and the TRON capable modules can set diagnostic trouble codes (DTCs) U211A, U211B, U211C, U3034, U3035, U3036, U35D9, U35DA and/or U35DB if the secret authentication security keys are not aligned between the modules, a loss of communication is occuring between modules and/or a module is not responding. This may be a result of missing t
• TSB 23-2421
  2023-12-20 · Power Train — Automatic Transmission — Control Module (Tcm/Pcm/Tecm)
• Some 2023 F-Super Duty vehicles equipped with a 6.8L or 7.3L engine may exhibit an illuminated malfunction indicator lamp (MIL) with diagnostic trouble codes (DTC) P061B, U0140, U3035 and/or U3036 stored in the powertrain control module (PCM). This may be due to the software in the PCM. To correct the condition, follow the Service Procedure to reprogram the PCM.
• SSM 51497
  2023-03-24 · Power Train — Automatic Transmission — Control Module (Tcm/Pcm/Tecm)
• Some 2023 F-Super Duty vehicles may set diagnostic trouble codes (DTCS) U3035 and/or U3036 in the powertrain control module (PCM) during a diagnostic self-test. These DTCS set when the PCM detects an authentication failure after key initialization (U3035) and/or while the PCM continues to monitor DTC (U3036) during the transition of the controller area network (CAN) bus entering sleep mode. U3035

A stored code names the test that failed, never the part that caused it. It is the starting point of a diagnosis, not its conclusion — the same code has several possible causes and the cheap one is not always right.