System Too Lean (Bank 1)

What does this mean?

Code P0171 indicates the engine control module has detected that the fuel system on Bank 1 is running too lean — there is too much air or too little fuel in the air-fuel mixture. The long-term fuel trim has exceeded its adjustment range.

Disclaimer: This diagnostic code is part of the standard OBD2 system and can apply to Tesla Model-s models manufactured from 1996 to 2026. However, please note that the presence of this specific code depends on your vehicle's exact engine configuration, options, and production year.