What is the cause of the fault code in the ZF 12-speed automatic transmission?

1 Answers
JasmineAnn
07/29/25 10:35pm
When the combustible mixture is too lean, the flame propagation speed in the cylinder slows down, making the engine difficult to start, the speed hard to increase after starting, and resulting in insufficient power. The following is an introduction to automotive automatic transmissions: 1. Automatic Transmission: An automatic transmission is a device that can automatically shift gears based on the vehicle speed and engine RPM, as opposed to a manual transmission. Currently, there are four common types of automotive automatic transmissions: hydraulic automatic transmission (AT), mechanical continuously variable transmission (CVT), electronically controlled mechanical automatic transmission (AMT), and dual-clutch automatic transmission. 2. Classification and Structure: Based on different working principles, there are four common types of automatic transmissions in vehicles today: hydraulic automatic transmission, mechanical continuously variable transmission, electronically controlled mechanical automatic transmission, and dual-clutch automatic transmission.
Was this review help?
4
4
Share
More Forum Discussions

What Causes the Clutch to Lose Pressure and Not Rebound, Making It Impossible to Engage Gears?

The reasons why the clutch pedal does not rebound and gears cannot be engaged after being depressed: 1. Clutch return spring detachment or breakage: The rebound of the clutch is achieved by the return spring. Therefore, when the clutch return spring is detached or broken, the clutch cannot rebound. As long as the pedal does not rebound, the engine's power cannot be transmitted to the transmission, resulting in the vehicle having no power. In such a case of failure, simply replacing the clutch return spring is sufficient. 2. Clutch pedal breakage: If the clutch pedal breaks, the pressure applied by the driver to the clutch pedal cannot be transmitted to the transmission. This problem can only be resolved by replacing the entire clutch assembly.
19
2
Share

What is the general length of a sedan in meters?

Generally, the length of a sedan is around 4.8 meters. The relevant introduction about car length is as follows: Concept of car length: The distance between the two extreme points in the length direction of a car, that is, the distance from the most protruding position of the front bumper to the most protruding position of the rear bumper. Classification based on sedan length: Micro car (A00) length is less than 3.7M; Small car (A0) length is less than 4.3M; Compact car (A) length is less than 4.6M; Mid-size car (B) length is less than 4.9M; Full-size car (C) length is less than 5.1M; Luxury car (D) length is greater than 5.1M.
15
5
Share

Which has priority, left lane change or right lane change?

Right-turning vehicles must yield to left-turning vehicles. Below are relevant explanations: 1. When two vehicles are going straight, yield to the right: At intersections where both vehicles intend to proceed straight without traffic signal guidance, simultaneous straight movement would be highly dangerous. Hence, the "yield-to-right principle" is established, requiring vehicles to yield to those approaching from the right. This rule applies not only at intersections but also when vehicles from left and right sides merge into the same lane—right-side vehicles must be given priority in lane changing. 2. Right turns yield to straight-moving traffic: Right turns typically aren't controlled by traffic lights, whereas straight-moving traffic from the opposite direction usually has greater volume. To ensure traffic efficiency, right-turning vehicles must yield to straight-moving vehicles. At intersections without traffic signals, both left and right turns must yield to straight-moving vehicles.
16
5
Share

What is the impact of seat height on reference points?

Hill starts, right-angle turns, S-curve driving, reverse parking, and parallel parking all require reference points. Here are the relevant introductions: 1. Hill start: This is a field test in the second subject of the driver's license test, which involves starting a vehicle parked on a steep slope upwards. 2. S-curve driving: As one of the four items in the second subject of the driver's license test, it is relatively simple overall, but it is easy for the vehicle body to brush or press the line, resulting in failing the test. 3. Reverse parking: This is an assessment point in the driver's test. It involves correctly reversing the vehicle into the garage from both sides while in motion. 4. Parallel parking: First, the visual estimation must be accurate. No matter the length of the parking space grid, the rear of the car must enter first to ensure smooth positioning.
17
3
Share

What kind of engine oil should be used for naturally aspirated car maintenance?

Fully synthetic engine oil should be used for naturally aspirated car maintenance. The following is a related introduction to engine oil: 1. Mineral oil: A commonly used lubricant in the market. Essentially, it utilizes the inferior components of crude oil. Mineral oil is inexpensive, but its service life and lubrication performance are inferior to synthetic oil, and it also causes significant environmental pollution. Additionally, mineral oil cannot completely remove impurities during the refining process, resulting in a higher pour point, making it unsuitable for use in extreme cold conditions. 2. Semi-synthetic engine oil: A product purified from mineral oil through hydrocracking technology, it is a mixture of mineral oil and fully synthetic oil in a ratio of 4:6. The purity of semi-synthetic oil is very close to that of fully synthetic oil, but its cost is slightly higher than that of mineral oil, making it an ideal transitional product from mineral oil to synthetic oil. 3. Fully synthetic engine oil: Fully synthetic engine oil is a high-grade oil among engine oils. It is derived from ethylene and propylene dispersed from natural gas or crude oil gas, and then undergoes complex chemical reactions such as polymerization and catalysis to form a lubricating fluid composed of large molecules.
19
0
Share

Why Maintain a Larger Following Distance on Wet Roads

Maintaining a larger following distance on wet roads is necessary because the reflection from water on the road can impair distance judgment, the slippery surface increases braking distance, and water spray from the vehicle ahead can reduce visibility. Below are some key points about driving through water: 1. Overview: Driving through water refers to navigating vehicles through low-lying, waterlogged areas, typically during rainy weather or in low-lying sections of roads with inadequate drainage. 2. Precautions: Before entering water, observe the road conditions carefully. While in water, maintain steady power, and after exiting, check the electrical systems. If the vehicle stalls in water, it should be towed to a 4S shop immediately for professional handling.
11
3
Share
Cookie
Cookie Settings
© 2025 Servanan International Pte. Ltd.