Why are the EPC light and engine light on the Volkswagen dashboard illuminated?
2 Answers
The reasons for the EPC light on the Volkswagen dashboard being illuminated are: 1. The electronic throttle is dirty or has excessive carbon deposits; 2. The fuel used does not meet the standards; 3. ECU malfunction; 4. Insufficient car battery power; 5. False alarm by the car. The reasons for the engine light on the Volkswagen dashboard being illuminated are: 1. Damaged sensors, poor contact, or signal interruption; 2. Poor engine maintenance; 3. Poor quality of fuel and engine oil; 4. Incomplete combustion of the air-fuel mixture; 5. Faulty spark plugs or ignition coils. Taking the Volkswagen Sagitar 2021 model as an example, its body dimensions are: length 4753mm, width 1800mm, height 1462mm, with a wheelbase of 2731mm. The Volkswagen Sagitar 2021 model is equipped with a 1.2T turbocharged engine, with a maximum power of 85kW and a maximum torque of 175Nm, matched with a 5-speed manual transmission.
Last time when I was driving my Volkswagen, both the EPC and engine warning lights came on. After checking at the 4S shop, they found it was a faulty brake light switch. The mechanic said it's quite common for these two lights to illuminate simultaneously. Apart from brake switch issues, it could also be due to a dirty or clogged electronic throttle body, or a malfunctioning throttle position sensor. If you experience sluggish throttle response or poor acceleration, it's likely one of these components causing the problem. Another possibility is an air leak in the intake system, such as a cracked intake pipe or loose clamp, which can trigger false readings from the intake pressure sensor. Don't ignore these symptoms - get professional diagnostic equipment to read the trouble codes immediately, as DIY attempts might complicate things further. My car needed a new switch which cost over 300 yuan, and after clearing the fault codes, it ran perfectly again.
