Start by checking the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector's pins.
Check to see all the brake lights are working, if they are not check the stop lamp switch. (see picture)
The cost to diagnose the P1805 2005 Nissan Maxima code is 1.0 hour of labor. The auto repair's diagnosis time and labor rates vary by location, vehicle's make and model, and even your engine type. Most auto repair shops charge between $75 and $150 per hour.
Brake switch signal is applied to the ECM through the stop lamp switch when the brake pedal is depressed.
This signal is used mainly to decrease the engine speed when the vehicle is driving.
Need more information on how to fix the P1805 2005 Nissan Maxima code? Get Access to Factory Service Manuals
Get the P1805 2005 Nissan Maxima code diagnosed by a professional: Find a repair shop in your area