Why can't the c1122 trouble code be cleared?
2 Answers
c1122 trouble code needs to be inspected and repaired at a 4S shop before it can be cleared. Below is more information about the c1122 trouble code: 1. The c1122 trouble code refers to a fault in the right front body acceleration sensor. 2. As the information source for automotive electronic control systems, the vehicle speed sensor is a critical component and one of the core research areas in automotive electronic technology. 3. The speed sensor detects the vehicle speed for the electronic control system. The control computer uses this input signal to regulate engine idle speed, torque converter lock-up in automatic transmissions, automatic transmission shifting, engine cooling fan operation, cruise control, and other functions.
I've encountered the issue of the C1122 trouble code not clearing several times. This is usually related to the vehicle's ABS system, possibly due to a malfunctioning brake pressure sensor. If the sensor is physically damaged, such as aging cracks or foreign object intrusion, the code will keep reappearing after clearing. Wiring issues are also common—loose connections, short circuits, or corrosion in the sensor's wiring can cause unstable signals. Diagnostic tools may clear surface errors, but the root problem remains. Another factor is the control module—if the module itself fails or requires a software update, a simple reset won't help. I recommend first checking if the brake fluid level is normal and using a multimeter to test the sensor's resistance. If you don't have the equipment, don't tamper with it. ABS failure affects driving safety, increasing the risk of wheel lockup during emergency braking, so it's best to visit a professional repair shop promptly. They can perform in-depth scans and repairs with specialized computers. Don't delay—small issues can turn into major repairs.
