OBD-II DTC · SAE J2012

U3005

Retained Accessory Power

Powertrain → Depends on cause

What U3005 means

U3005 is a standard SAE J2012 powertrain diagnostic trouble code with the defined meaning: Retained Accessory Power. This is the OEM-agnostic definition; specific manufacturer interpretation may add detail (subsystem, bank, sensor location) but the core meaning is consistent across all OBD-II compliant vehicles since 1996.

Common symptoms when U3005 is active

Generic powertrain MIL — meaning varies by manufacturer.

Can this code be suppressed via ECU tuning?

Whether this code is safe to suppress depends on the underlying cause. Diagnose first, suppress only after confirming the mechanical issue is benign or rectified.

How to remove U3005 with Softechpro V5

Recommended service: DTC OFF (generic). Step-by-step workflow:

  1. Look up the manufacturer-specific definition before deciding to suppress — generic P-codes can mean very different things on VAG vs PSA vs BMW.
  2. If the fault is benign or the underlying repair is done, Softechpro V5 DTC OFF suppresses the code.
  3. Load .bin, select DTC OFF, target the specific code, save patched .bin, flash back.

Softechpro V5 supports 1,400+ ECU firmwares across Bosch (EDC15, EDC16, EDC17, MD1, MG1, ME7, MED17), Siemens / Continental (SID, SIMOS, EMS), Delphi (DCM, DDC), and Magneti Marelli platforms.

Related codes in the U30xx family

U3000U3001U3002U3003U3004U3006U3007U3008U3009U300AU300BU300C