P0605: owner reports and bulletins

Powertrain (generic, all makes). We haven't written the explanation for this code yet. Below is what owners and manufacturers have filed with NHTSA.

Got P0605 on your scanner? Tell the mechanic your year, make, model and any symptoms and you'll get the likely cause and what to check first. Ask about this code.

What owners report to NHTSA

9 complaints filed with NHTSA mention P0605, 6 of them since 2015, across 5 different models. The component owners most often filed it under: electrical system.

Most-reported models

VehicleComplaintsModel years reported
HYUNDAI SONATA42011, 2012, 2016

Manufacturer service bulletins that name P0605

12 technical service bulletins and manufacturer communications filed with NHTSA mention P0605, from 5 makes. A bulletin means the manufacturer has documented a known cause or a fix procedure for that model. Examples:

  • KIA SOUL (2020, 2021), bulletin 10188139: TECHNICAL SERVICE BULLETIN - SERVICE ACTION: MIL ON DTC P0605 AND/OR P2181 ECM LOGIC IMPROVEMENT (SA463) - This bulletin provides the procedure to improve the logic of the Engine Control Module (ECM) on some 2020-2021MY …
  • KIA SELTOS (2021, 2020), bulletin 10206643: TECHNICAL SERVICE BULLETIN - SERVICE ACTION: MIL ON DTC P0605 AND/OR P2181 ECM LOGIC IMPROVEMENT (SA463) - This bulletin has been revised to include additional information. New/revised sections of this bulletin are indic…
  • AUDI A8 (2010, 2011, 2012, 2013), bulletin 10226512: Gearbox warning light on - Faults P0605 and/or P17EC stored in Selector lever module 81
  • NISSAN TITAN (2017), bulletin 10119198: 2017 TITAN XD; MIL ON WITH DTC P0605 This bulletin applies only to vehicles equipped with a Cummins 5.0L V8 Diesel engine. IF YOU CONFIRM The MIL is ?ON? with DTC P0605 (ECM), and There are no drivability issues. ACTION …
  • HYUNDAI SONATA (2015, 2016), bulletin 10076003: Service Campaign TZ3 2015-16 Sonata 2.4L ECM Update DTC P200A & P0605 (TSB# 16-01-004-1) Hyundai Motor America has added additional vehicles to Service Campaign TZ3. Service Campaign TZ3 provides a procedure to update th…
  • NISSAN TITAN XD (2016), bulletin 10192832: IF YOU CONFIRM The MIL is ON with one or more of the following DTCs stored: * P020A - F: Cylinder 1 - 6 Injection Timing * P021A - B: Cylinder 7 - 8 Injection Timing * P060C: Internal Control Module Main Processor Perfor…

Sources: NHTSA Office of Defects Investigation complaint database and manufacturer communications file, snapshots September 2026. A complaint or bulletin that mentions a code is a report about that vehicle, not a statement that the code has one cause.