What causes the VSA solenoid valve failure in Honda Accord?

1 Answers
EmiliaDella
07/29/25 6:30pm
Honda Accord VSA solenoid valve failure can be attributed to the following reasons: 1. Starting difficulties: The Honda Accord may experience hard starting, unstable idling, and acceleration shudder, with more severe symptoms when the engine is cold. This is mostly caused by an excessively dirty throttle body or severe carbon buildup in the idle control valve, leading to such malfunctions. The engine malfunction indicator light may sometimes remain illuminated. 2. Restricted air intake: The main issue lies in restricted air intake. During cold starts, when relatively more air intake is required, although the ECU will control the idle control valve for adjustment, this process takes time. Therefore, such failures often occur due to an excessively dirty throttle body or severe carbon buildup in the idle control valve. However, this type of failure rarely causes the malfunction indicator light to stay on.
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