P0704: 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 P0704 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

1 complaints filed with NHTSA mention P0704, 1 of them since 2015, across 1 different models. The component owners most often filed it under: power train.

Manufacturer service bulletins that name P0704

1 technical service bulletins and manufacturer communications filed with NHTSA mention P0704, from 1 makes. A bulletin means the manufacturer has documented a known cause or a fix procedure for that model. Examples:

  • LAND ROVER RANGE ROVER EVOQUE (2014), bulletin 10206624: 9 speed automatic transmission faults - A small volume of 14MY Evoque (L538) are flagging the following TCM DTC codes P0704 or P0704-07 during SDD DTC read (which are all related to 9HP48 automatic transmission)

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.