| Name | Cause | Solution |
| The engine does not start or starting is difficult | Ignition switch malfunction Ignition coil malfunction Spark plug failure System connections are broken High voltage wires faulty | Check the ignition switch Check the ignition coils Check the spark plugs Check connections Check the wires |
| Unstable engine operation at idle speed, engine stalling | Ignition coil malfunction Spark plug failure System connections are broken High voltage wires faulty | Check the ignition coils Check the spark plugs Check connections Check the wires |
| The battery charging indicator light does not light when the key is turned in the ignition switch | The fuse has blown The emergency light burned out The voltage regulator wiring is damaged Voltage regulator failure | Check for short circuit and replace the fuse Replace the lamp Fix the problem Replace the regulator |
| The battery charging warning light does not go out after starting the engine | Increased wear of the generator drive belt, insufficient belt tension The battery terminals are corroded or loose Voltage regulator failure | Fix the problem Fix the problem Replace the regulator |
| The tachometer doesn't work | The fuse has blown Tachometer malfunction Electrical wiring fault | Check for short circuit and replace the fuse Check the tachometer Fix the problem |
| The fuel gauge is not working | The fuse has blown Pointer malfunction Fuel level sensor malfunction Electrical wiring fault | Check for short circuit and replace the fuse Check the pointer Check the sensor Fix the problem |
| The fuel reserve indicator light does not light | The fuse has blown The light bulb burned out Fuel level sensor malfunction Electrical fault or broken connection to the "ground" | Check for short circuit and replace the fuse Replace the lamp Check the sensor Fix the problem |
| The coolant temperature gauge does not work | The fuse has blown Pointer malfunction Coolant temperature sensor malfunction Electrical fault or broken connection to the "ground" | Check for short circuit and replace the fuse Check the pointer Check the sensor Fix the problem |
| The oil pressure warning light does not come on | The fuse has blown The light bulb burned out Oil pressure sensor malfunction Electrical fault or broken connection to the "ground" | Check for short circuit and replace the fuse Replace the lamp Check the sensor Fix the problem |
| The brake fluid level indicator light does not come on | The fuse has blown The light bulb burned out Brake fluid level sensor malfunction Parking brake sensor malfunction Electrical fault or broken connection to the "ground" | Check for short circuit and replace the fuse Replace the lamp Check the sensor Check the sensor Fix the problem |
| The door ajar indicator light does not light | The fuse has blown The light bulb burned out Door sensor malfunction Faulty wiring or broken connection to the "ground" | Check for short circuit and replace the fuse Replace the lamp Check the sensor Fix the problem |
| The seat belt warning light does not come on | The fuse has blown The light bulb burned out Belt sensor malfunction Faulty wiring or broken connection to the "ground" | Check for short circuit and replace the fuse Replace the lamp Check the sensor Fix the problem |
| One of the outdoor lighting lamps is not working | The light bulb burned out Malfunction of the lamp holder, wiring violation or connection to the "ground" | Replace the lamp Fix the problem |
| The headlights don't work | The light bulbs burned out The fuse has blown Light switch malfunction Wiring or "ground" connection faulty | Replace the lamp Check for short circuit and replace the fuse Check the switch Fix the problem |
| The rear side lights and license plate lights do not work | The fuse has blown The battery fuse (50 A) has blown Tail light relay failure Exterior lighting switch malfunction Faulty wiring or broken connection to the "ground" | Check for short circuit and replace the fuse Replace the fuse link Check the relay Check the switch Fix the problem |
| The brake lights don't work | The fuse has blown Brake light switch malfunction Wiring or "ground" connection faulty | Replace the fuse and check for a short circuit Adjust or replace the switch Fix the problem |
| The brake lights do not go out | Brake light switch malfunction | Adjust or replace the switch |
| The instrument lighting lamps do not light up (the parking light is on) | Instrument lighting brightness control malfunction Wiring or "ground" connection faulty | Check the regulator Fix the problem |
| The turn signal on one side does not work | The light bulb burned out Turn signal switch malfunction Faulty wiring or broken connection to the "ground" | Replace the lamp Check the switch Fix the problem |
| The turn signals don't work | The fuse has blown Breaker relay failure Turn signal switch malfunction Faulty wiring or broken connection to the "ground" | Replace the fuse and check for a short circuit Check the circuit breaker relay Check the switch Fix the problem |
| The hazard warning lights are not working | The fuse has blown Breaker relay failure Malfunction of the hazard warning switch Alarm relay malfunction Faulty wiring or broken connection to the "ground" | Replace the fuse and check for a short circuit Check the circuit breaker relay Check the switch Replace the relay Fix the problem |
| Increased or decreased frequency of flashing of direction indicators | The power of the indicator lamps is below or above the norm Breaker relay failure | Replace the lamps Check the circuit breaker relay |
| The reverse light does not turn on | The fuse has blown Reverse light switch malfunction Faulty wiring or broken connection to the "ground" | Replace the fuse and check for a short circuit Check the switch Fix the problem |
| The roof console lights in the cabin do not light up | The fuse has blown Faulty wiring or broken connection to the "ground" | Replace the fuse and check for a short circuit Fix the problem |
(Article reprinted from the website: «skodabook.ru»)