What does the triangle exclamation mark in a Peugeot 307 mean?
2 Answers
A triangle with an exclamation mark inside indicates a malfunction in the vehicle's general performance, components, or functions. Common issues include parking sensor failure, fuel cut-off system intervention or malfunction, external light failure, or engine oil pressure sensor failure. Solution: It is necessary to visit a 4S shop for inspection to identify the source of the fault. The exclamation mark is a common fault indicator in vehicles. Besides the triangle with an exclamation mark, there are four other forms of exclamation marks: a yellow gear with an exclamation mark inside, a red circle with brackets and an exclamation mark in the middle, a yellow bracket with a horizontal line and an exclamation mark in the middle, and a yellow bulb with an exclamation mark. Below is a detailed analysis of these four scenarios: Automatic transmission fault: A yellow gear with an exclamation mark inside is the automatic transmission fault warning light, indicating a fault in the transmission or transmission lubricant below the normal range. Transmission oil should be replaced promptly. Brake system fault: A circle with brackets and an exclamation mark in the middle represents a brake system warning, mainly indicating a brake system malfunction or low brake fluid level. The brake system should be inspected immediately to avoid accidents. Tire pressure anomaly: A bracket with a horizontal line and an exclamation mark in the middle represents the tire pressure monitoring warning light, which illuminates when the tire pressure is too low. Check the tire pressure and restore it to the normal range. Lighting fault: A yellow bulb with an exclamation mark is the lighting fault indicator, signaling a malfunction in the vehicle's lights. Solution: Visit a 4S shop for inspection as soon as possible, or conduct a self-check, focusing on commonly used bulbs such as turn signals, fog lights, and interior lights to identify the issue.
When driving a Peugeot 307, seeing the triangle exclamation mark light up on the dashboard indicates that the car is alerting you to an abnormal situation, which could be a precursor to a major issue. Having driven for over a decade, I’m most afraid of ignoring these warning lights. Common causes include brake system failures such as insufficient brake fluid or ABS system malfunctions, tire pressure monitoring triggers, or aging electronic components like faulty engine-related sensors. This is especially dangerous during rainy weather or long-distance driving when the light suddenly comes on, as it can affect the vehicle’s stability. In such cases, I immediately pull over safely to check the brakes and tire pressure. If everything seems normal but the light remains on, don’t hesitate—head straight to a repair shop for a professional technician to scan the fault codes with a diagnostic tool. For regular maintenance, I recommend frequently checking fluid levels to prevent sudden failures that could compromise safety.
