P2600: 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 P2600 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

10 complaints filed with NHTSA mention P2600, 10 of them since 2015, across 4 different models. The component owners most often filed it under: engine.

Most-reported models

VehicleComplaintsModel years reported
HYUNDAI SONATA72015, 2016, 2018

Manufacturer service bulletins that name P2600

3 technical service bulletins and manufacturer communications filed with NHTSA mention P2600, from 2 makes. A bulletin means the manufacturer has documented a known cause or a fix procedure for that model. Examples:

  • KIA NIRO PLUG-IN HYBRID (2019), bulletin 10187725: TECHNICAL SERVICE BULLETIN: AEWP PARTIAL REPLACEMENT FOR DTC P2600/P0C73 - This bulletin provides information to replace the Can Case of the Auxiliary Electric Water Pump (AEWP) on some 2019MY Niro (DE HEV, DE PHEV) vehi…
  • HYUNDAI SONATA HYBRID (2016, 2017, 2018, 2019), bulletin 10199106: This bulletin describes the procedure to diagnose and repair the Engine Electric Water Pump (EEWP) on certain Sonata Hybrid (LF HEV) and Sonata Plug-In Hybrid (LF PHEV) vehicles with DTC P2600, causing an HEV and/or MIL …

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.