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How to Deal with P0700 Transmission Control System Malfunction?

2 Answers

VanCooper

09/06/25 7:37am

p0700 transmission control system malfunction can be resolved by promptly sending the vehicle to a 4S shop or repair facility for maintenance. The appearance of the P0700 fault code indicates a transmission malfunction, but specific data flow analysis is required. Generally, intermittent faults can be resolved by clearing the fault code. Transmissions are categorized into: 1. Stepped transmission: Uses gear transmission with several fixed transmission ratios; 2. Continuously variable transmission (CVT): Can continuously obtain any transmission ratio within the speed range. Transmission maintenance methods include: 1. Regularly checking the fluid level; 2. Avoiding skipping gears when upshifting; 3. Not forcing the transmission into neutral; 4. Not shortening the idle warm-up time; 5. Avoiding gear grinding when shifting.

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Cardoso

09/18/25 7:16am

Last time when my car showed the P0700 trouble code, I was really panicked. It indicates the transmission computer detected a problem with the entire control system. The first thing I did was check the dashboard for other warnings, like the engine light. As an average car owner, my advice is don't keep driving - suddenly losing power on the highway can be dangerous. After parking, I tried restarting twice but the code remained. Transmission issues can involve many aspects: oil pump failure, sensor signal loss, or control module crash. This kind of systemic problem is beyond DIY repair. I directly contacted the 4S shop's professional technician, who used their diagnostic tool to identify the specific code confirming a stuck valve body solenoid. It ended up costing about two thousand to replace. My suggestion is don't push your luck with this situation - seek professional repair promptly.

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What is the fuel consumption of the Changan CS75?

The MIIT comprehensive fuel consumption of the Changan CS75 is 6.5L/100km, while the actual fuel consumption is around 9L/100km. The MIIT comprehensive fuel consumption is data collected under ideal conditions, and due to various factors such as environment and driving habits, the actual fuel consumption tends to be higher than the MIIT figure. Additional information: 1. Definition of fuel consumption: Fuel consumption generally refers to constant-speed fuel consumption, which is the vehicle's fuel consumption per 100 kilometers obtained in constant-speed fuel consumption tests specified by national standards for certain types of vehicles. 2. Types of vehicles include: (1) M1 category, M2 category with a maximum design total mass not exceeding 3.5 tons, and N1 category compressed natural gas vehicles; M1 category and N1 category vehicles with a maximum design total mass not exceeding 3.5 tons, tested according to the method specified in GB/T-12545.1-2008 "Test methods for fuel consumption of passenger cars." (2) M2 category, M3 category, N2 category, and N3 category compressed natural gas vehicles with a maximum design total mass exceeding 3.5 tons; M2 category, M3 category, and N category vehicles with a maximum total mass greater than or equal to 2 tons, tested according to the method specified in GB/T-12545.2-2001 "Test methods for fuel consumption of commercial vehicles."

Does the Dash Cam Record When the Car is Parked?

If equipped with a parking monitoring feature, the dash cam can continue to operate after the vehicle is parked and turned off. However, the duration of operation will not be very long, as the dash cam's functionality depends on its own power supply. Once the vehicle is turned off, there is no power supply, so it can only operate for a short period. More details about dash cams are as follows: 1. Introduction One: Dash cams have two types of parking recording functions. One type records continuously as long as the car is running, also known as full-time recording. The other type relies on motion detection, meaning it only starts recording when the vehicle experiences movement. Dash cams with this feature cannot continue recording after the vehicle is turned off. 2. Introduction Two: Some dash cams come with their own batteries, but the battery life is limited. Some can only record for half an hour. Therefore, if the owner wants to record the vehicle around the clock, it is almost impossible unless the car is running 24/7. Without the vehicle running and no power supply, relying solely on the dash cam's built-in battery makes continuous recording difficult.

What does PEPS mean in cars?

PEPS in cars refers to the keyless system, also known as the Passive Entry Passive Start system. The function of the keyless system is simply that when the driver steps into a designated range, the system can recognize the authorized driver and automatically open the door; when leaving the vehicle, the door locks will automatically lock and enter an anti-theft state. The working principle of the keyless system is as follows: 1. Carry the car key to the vicinity of the vehicle (the car key must have power), when pressing the vehicle button or pulling the door handle, the vehicle will receive the ignition or unlock signal and send a signal to the low-frequency antenna. 2. After receiving the signal, the low-frequency antenna will send a low-frequency trigger signal to the car key. 3. The car key receives the low-frequency trigger signal and sends a high-frequency unlock signal. 4. The high-frequency receiver receives the high-frequency unlock signal, and the entire vehicle completes the unlocking or ignition process.

Should You Engage the Handbrake or Shift Gears First When Driving?

For manual transmissions, you should shift into gear first before releasing the handbrake. This is to prevent the vehicle from rolling backward if parked on a slope—releasing the handbrake first could cause the car to roll, but shifting into gear first ensures it stays in place. For automatic transmissions, the order doesn't matter as much; you can either shift into gear or engage the handbrake first, as long as safety is ensured. Here’s an introduction to manual and automatic transmissions: 1. A manual transmission uses a manual gear-shifting mechanical transmission (also called a manual gearbox, MT) to adjust the vehicle's speed. This means the driver must manually move the gear lever to change the gear engagement inside the transmission, altering the gear ratio to achieve speed changes. 2. An automatic transmission does not require the driver to shift gears manually. The vehicle automatically selects the appropriate gear based on driving speed and traffic conditions.

What are the principles of various transmissions?

Transmission working principles are as follows: 1. Manual transmissions mainly consist of gears and shafts, achieving speed and torque variation through different gear combinations. 2. Automatic transmissions (AT) are composed of a torque converter, planetary gears, and a hydraulic control system, achieving speed and torque variation through hydraulic power transmission and gear combinations. The torque converter is the most distinctive component of an AT, consisting of a pump impeller, turbine, and guide wheel, directly inputting engine power to transmit torque and perform clutch functions. 3. If liquid is used instead of air as the medium for transmitting kinetic energy, the pump impeller will drive the turbine to rotate through the liquid, with a guide wheel added between the pump impeller and turbine to improve liquid transmission efficiency. Since the torque converter's automatic speed and torque variation range is not large enough and efficiency is relatively low, several rows of planetary gears are connected in series behind the turbine to improve efficiency. The hydraulic control system automatically operates the planetary gears according to engine working conditions, thereby achieving automatic gear shifting.

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In terms of performance, the GTR undoubtedly qualifies as a top-tier supercar. However, a supercar is not merely about piling on performance specs. Historically, the GTR's predecessors were high-performance sports sedans under the Skyline series, not supercars. Here’s more about the GTR: 1. The Nissan GTR refers to a high-performance, high-reliability, high-power sports car produced by Nissan. After years of evolution and refinement of Nissan's Skyline sedan series, the GTR model emerged, becoming the pinnacle of the series and adored by countless fans. 2. The entire GTR lineup is equipped with a 3.8-liter V6 twin-turbocharged engine, delivering exceptional power with a maximum output of 357 kW and a peak torque of 588 Nm.

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