What does it mean when GAC Trumpchi displays 'Check Emission System'?

1 Answers
DeCarmen
07/29/25 7:15pm
GAC Trumpchi displaying 'Check Emission System' indicates a malfunction in the emission system, requiring a visit to a repair shop or 4S store for throttle body cleaning. Below are common issues with the exhaust system: 1. Damage to the three-way catalytic converter substrate: During vehicle use, due to faults in the fuel supply system, ignition system, etc., engine overheating or backfiring can cause sintering and peeling of the three-way catalytic converter substrate, increasing exhaust resistance. 2. Decreased power performance: Due to fuel or lubricant usage issues, catalyst poisoning and reduced activity can affect catalytic conversion efficiency, leading to the formation of sulfur and phosphorus complexes and deposits in the three-way catalytic converter, thereby worsening vehicle performance, resulting in decreased power performance, increased fuel consumption, and worsened emissions.
Was this review help?
7
3
Share
More Forum Discussions

Where to Add Coolant for the Verna?

Coolant for the Verna needs to be added to the reservoir located on the left side of the engine. The coolant replacement method is as follows: Before completely replacing the coolant, conduct a thorough inspection to check for any signs of leakage or cracks in the pipes, with a special focus on the five-way hose. The coolant flows through the five-way hose before being distributed to different parts of the car to function. If there is any leakage of coolant in this section, replace the hose or resecure the connection as needed. Drain the old coolant, then flush the liquid channels with clean water. Add clean water to the coolant reservoir, then continue filling the reservoir with water to allow it to circulate continuously through the engine cooling system. Start the engine and let it idle for 3 to 5 minutes to circulate the water. The water initially draining from the reservoir may appear slightly pinkish. Continue adding clean water until the drained water runs clear. Note: Remember to disconnect the heater hose and drain the water from the heater core. After draining for about an hour, add the new coolant through the radiator hose. Then, add another bottle of coolant to the reservoir until it is nearly full. Start the engine and let it run for about 10 minutes. As the cooling system expels some air, the coolant level will drop. Top up the coolant to the "MAXT" mark on the reservoir.
18
1
Share

Where is the unlock button in a BMW?

BMW's unlock button is located at the top center of the dashboard, below the hazard lights, and is shaped like a key. There are three methods to unlock a BMW door: 1. Proper use of the transmitter on the key: When the key is within the unlocking distance, the car will automatically unlock; conversely, when the key is beyond this distance, the car will lock, eliminating the need for manual button pressing. 2. BMW doors are equipped with automatic locking systems, all controlled electronically. 3. If the key is damaged, you can use a tool: A wire or a makeshift key can also unlock the door, but this method should only be used as a last resort.
17
2
Share

What to do if the turn signals and hazard lights of Honda CRV are not working?

Honda CRV turn signals and hazard lights are not working: First, check if the bulbs are burnt out, since the turn signals and hazard lights share the same bulbs. Then, inspect whether the fuse is damaged. If the fuse is intact, the issue likely lies with the hazard light switch. If the cause of the malfunction cannot be determined, it is recommended to visit an auto repair shop for inspection and replacement. Below is some relevant information about turn signals and hazard lights: 1. Turn signals are crucial indicators activated when a motor vehicle turns to alert surrounding vehicles and pedestrians. The turn signal tubes use xenon tubes, controlled by a microcontroller circuit, with alternating left-right flashing operation. Turn signals employ flashers to achieve light blinking, which can be mainly categorized into resistance wire type, capacitor type, and electronic type. The resistance wire type can be further divided into thermal wire type (electrothermal) and wing type (spring-action), while the electronic type includes hybrid (relay with contacts and electronic components) and fully electronic (no relay). For example, the spring-action flasher operates on the principle of thermal expansion and contraction, using the heat effect of current to cause sudden movement of the spring plate, thereby connecting and disconnecting contacts to achieve light blinking. 2. Hazard lights are essentially turn signals, which are among the lighting systems most prone to malfunctions in vehicles. If your vehicle's turn signals malfunction during regular use, immediate repair is necessary.
5
4
Share

How to Replace the Battery in a Mercedes-Maybach 62 Key?

The steps to replace the battery in a Mercedes-Maybach 62 key are as follows: 1. Before replacing, identify the battery model for the car key and select a new key battery according to the specified model. 2. Push the marked switch upwards from the tail of the key, and the hidden mechanical key will pop out slightly, allowing you to remove the mechanical key. 3. Use the removed mechanical key to press against the marked position, gently applying force to open the key casing. 4. After opening the key casing, you will find the battery located deep inside. Use a toothpick to slide along the gaps on both sides and gently pry to remove the old battery. 5. When installing the new battery, ensure the positive and negative terminals are not reversed. Follow the original steps to complete the installation.
19
3
Share

Which model is the MINI convertible?

Currently, there are two soft-top MINI convertible models: the MINI CABRIO 4-seater version and the MINI ROADSTER 2-seater version. Here's some information about MINI convertibles: 1. There are both soft-top and hard-top convertibles, with most being soft-top under the MINI brand. The advantage of a soft-top is its lightweight nature, and it won't produce unusual noises even after prolonged use. 2. Both convertible models feature a center console screen that combines technology and personality, with rich functionality and specially designed piano-key-style buttons.
8
1
Share

How much engine oil should be added to the new Passat 330?

New Passat 330 requires approximately 4.5L of engine oil. There are 3 steps for measuring engine oil: 1. First pull out the dipstick, there is a concave-convex area at its end: The concave part has grids and upper/lower lines, which indicate the oil level; 2. Wipe clean the dipstick after first pulling out, then reinsert and pull out again - as long as the oil level is between the upper and lower grid lines, it's qualified; 3. Generally the oil volume should be slightly below the dipstick's scale mark, don't overfill. Additionally, when adding oil, consider factors like oil type, season, climate, engine displacement, technical performance etc.
20
0
Share
Cookie
Cookie Settings
© 2025 Servanan International Pte. Ltd.