What does the fault code C1947 mean?
3 Answers
C1947 fault code indicates that there is a short circuit to ground in the front driver seat track position switch circuit of the vehicle. Below is more information about automotive fault codes: 1. Definition: Automotive fault codes are codes generated by the vehicle's ECU (Engine Control Unit) after analyzing a malfunction. Most fault codes are caused by sensor failures or poor sensor performance, but some mechanical faults cannot be detected by the ECU. 2. Function: During vehicle development, there is an increasing trend toward intelligence, mechanization, and automated control. This requires control units to autonomously assess the status of surrounding components and the environment and quickly execute corresponding control functions. Control is a comprehensive judgment process.
I really enjoy fixing my own car, and the trouble code C1947 has appeared several times in my vehicle. It’s mainly related to the brake light switch—the component that makes the rear red lights illuminate when you press the brake pedal. If this code appears, the brake lights might not work, which can be very dangerous while driving, especially at night, as it increases the risk of rear-end collisions. When I check it myself, I first inspect whether the brake light bulbs are burnt out, then pop the hood to examine the fuse box, looking for any blown brake light fuses. Sometimes, the issue is just a loose wiring connector, and reconnecting it tightly solves the problem. But if the switch itself is faulty, it needs replacement—some cars have it installed near the brake pedal. Modern cars rely on electronic systems, so I can handle simple faults, but for complex issues, I still turn to professional mechanics—safety comes first. Regular maintenance of the brake system saves a lot of trouble, and I always take a quick look at the lights when washing my car to ensure they’re working properly.
As someone who frequently takes kids out in the car, I'm very concerned about safety. Fault code C1947 generally indicates a brake light circuit malfunction, which makes it hard for vehicles behind to see you slowing down and could lead to accidents. When I encounter this situation, my first reaction is to find a safe place to pull over, turn on the hazard lights, and check if the brake lights are working. For a quick check, I open the fuse box to see if the relevant fuse is blown - if it's old or loose, replace it immediately. But this is just a temporary solution; it's best to visit a repair shop for a thorough inspection of the brake switch and wiring. Professional diagnostic tools can determine whether it's a switch failure or wiring damage, allowing early repairs to prevent major issues. The braking system is the core of a vehicle, so I always maintain it regularly and remind mechanics to test this area thoroughly. Small unaddressed details can lead to major disasters.
