What is the c1201 engine/EV control system fault?
2 Answers
c1201 engine/EV control system fault is an automotive engine malfunction. Here is a detailed introduction about automotive engines: Overview: The automotive engine is the device that provides power to the vehicle, determining its power, fuel efficiency, stability, and environmental friendliness. Depending on the power source, automotive engines can be classified into diesel engines, gasoline engines, electric vehicle motors, and hybrids, among others. Others: Common gasoline and diesel engines are both types of reciprocating piston internal combustion engines, capable of converting the chemical energy of fuel into the mechanical energy of piston motion and outputting power externally. Gasoline engines have high rotational speeds, are lightweight, produce less noise, are easy to start, and have low manufacturing costs. Diesel engines have a high compression ratio, excellent thermal efficiency, and better fuel economy and emission performance than gasoline engines.
When I drove my hybrid car, I encountered a C1201 fault, which felt like a communication issue between the engine and the EV control system. That time, it was because the ABS wheel speed sensor was dirty, causing signal interruption and leading the computer to misjudge, resulting in soft brakes. Don’t underestimate it—the cause could also be a damaged sensor, a short circuit, or outdated software needing an update. If the warning light on the dashboard comes on, you should stop and do a preliminary check to see if the battery voltage is stable and if the connectors are loose. It’s recommended to immediately visit a professional shop to scan the fault code for targeted repairs. During regular maintenance, pay attention to cleaning the sensors to avoid dust buildup. Ignoring it could cause problems during emergency braking, especially when driving in rain or snow, where the risks are higher.
