What is the fault when the DSTC system requires repair?

[LaWeston]

DSTC requiring repair indicates a fault in the anti-lock braking system, which needs to be checked at a repair shop. Below is relevant information about the anti-lock braking system: 1. Overview: The Anti-lock Braking System (ABS) is designed to automatically control the braking force during vehicle braking, preventing the wheels from locking up and maintaining a state of rolling and sliding (with a slip ratio around 20%), ensuring maximum traction between the wheels and the road. 2. Working Principle: During braking, ABS quickly determines the wheel lock-up state based on signals from each wheel speed sensor. It closes the normally open input solenoid valve for the wheel that begins to lock, keeping the braking force constant. If the wheel continues to lock, the normally closed output solenoid valve is opened, allowing the braking pressure on that wheel to rapidly decrease due to the direct connection to the brake fluid reservoir, preventing complete wheel lock-up caused by excessive braking force. This ensures the braking state remains at the optimal point (with a slip ratio S of 20%), achieving the best braking performance and the highest level of driving safety.

[MacKingston]

Back then, the DTC light on my car's dashboard came on, which really worried me. This usually indicates an issue with the diagnostic system. It could be a faulty sensor, like the oxygen sensor or coolant temperature sensor failing and triggering false trouble codes. Alternatively, the issue might lie with the ECU (that small computer module), similar to a smartphone freezing. Additionally, aging wiring causing short circuits or open circuits can also trigger this—loose connectors are a common culprit. Sometimes, it's just a software bug that requires an update to prevent system misjudgments. While driving, you might notice power hesitation or a sudden spike in fuel consumption, which can impact driving safety. My advice is not to delay—get it scanned and checked at a professional shop ASAP to avoid the risk of breaking down on the road. Timely repairs can save you a lot of trouble and money!

[DeJameson]

As someone who frequently repairs cars, I find that DTC system malfunctions commonly occur in several areas. Sensor failures are frequent, such as a faulty mass airflow sensor or throttle position sensor, which can send incorrect data. When the control module has issues, components in the ECU box might get water damage or burn out. Wiring harness aging or connector corrosion can lead to short circuits or open circuits, causing unstable signal transmission. Additionally, software conflicts or the need for reprogramming can make it difficult to clear historical fault codes. During diagnosis, it's essential to use a scanner to read the codes and trace the root cause accordingly. If this system fails, the onboard computer won't function properly, potentially causing the engine to emit black smoke or stall automatically, requiring professional handling. Proper maintenance of older cars can prevent many of these issues, saving money and ensuring safety!

[Faith]

From a safety perspective, DTC system malfunctions can be quite dangerous. They may be triggered by sensor failures, such as a faulty wheel speed sensor causing the ABS light to illuminate and increasing braking distance; or by overheating damage to the electronic control unit, affecting engine performance and slowing response in emergencies. Aged or short-circuited wiring increases fire risks. A failed system might cause sudden loss of power, especially on highways. Timely repairs are crucial—don't wait for an accident. I personally perform regular checks on connectors and batteries, keep systems updated, as prevention is cheaper than repairs. If warning lights come on, pull over safely, turn off the engine first, then inspect!