What Causes the EPC Light to Illuminate and Power Loss?
1 Answers
EPC light illumination and power loss can be attributed to intake system malfunctions, dirty throttle bodies, ECU faults, or engine management system failures. Intake System Malfunction: Such as leaks or blockages. Troubleshooting involves ensuring fuel meets standards and cleaning the throttle body. Dirty Throttle Body: Or excessive carbon buildup, requiring carbon removal and cleaning of affected areas. ECU Fault: Reflashing ECU data is a last-resort method after other issues are resolved. Engine Management System Failure: Often accompanied by unstable idle or cold start engine vibrations, primarily due to poor fuel quality or dirty operating environments in China. Immediate inspection at a service center is recommended. EPC Light Analysis: A constantly illuminated EPC light indicates engine management or electronic control system faults, typically manifesting as rough idling or cold start shaking. For Chinese drivers, this is usually caused by substandard fuel quality or polluted driving conditions. Prompt service center inspection is advised. The EPC indicator activates during ignition switch function checks.