P0505: 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 P0505 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

15 complaints filed with NHTSA mention P0505, 7 of them since 2015, across 14 different models. The component owners most often filed it under: engine.

Manufacturer service bulletins that name P0505

4 technical service bulletins and manufacturer communications filed with NHTSA mention P0505, from 3 makes. A bulletin means the manufacturer has documented a known cause or a fix procedure for that model. Examples:

  • LAND ROVER LR2 (2013, 2012), bulletin 10204770: Engine MIL Illuminated with DTC P0505-8F and P2282-00 Stored and Misfire
  • JAGUAR F-PACE (2017, 2018, 2019, 2014), bulletin 10159477: Air leak from the right hand camshaft cover assembly due to a split diaphragm within the pressure control valve. Any of the following DTCs (indicating an air intake system leak) could be stored in the Powertrain Control …
  • NEW FLYER XE40 (2017, 2018, 2019), bulletin 10159477: Air leak from the right hand camshaft cover assembly due to a split diaphragm within the pressure control valve. Any of the following DTCs (indicating an air intake system leak) could be stored in the Powertrain Control …
  • LAND ROVER DISCOVERY (2018, 2019, 2007, 2008), bulletin 10160434: Air leak from the right hand camshaft cover assembly due to a split diaphragm within the pressure control valve. Any of the following DTCs (indicating an air intake system leak) could be stored in the Powertrain Control …

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.