VAPS Solenoid Actuator Output Circuit Open
The Variable Air Intake System (VAPS) solenoid isn't receiving electrical power or the circuit is broken, similar to a light switch with a cut wire. Your engine's intake manifold can't adjust airflow properly, affecting performance.
The ECM monitors voltage and current flow to the VAPS solenoid actuator during operation. It expects a specific amperage draw when the solenoid activates to control intake valve timing. An open circuit prevents current flow, triggering the fault code.
| Parameter | Normal Range | Fault Condition |
|---|---|---|
| Solenoid Current Draw | 0.5-2.5 amps during activation | 0 amps or below threshold |
| Circuit Voltage | 11-14 volts at solenoid connector | No voltage or excessive voltage drop |
Code C1922 is classified as a serious fault. If your check engine light is flashing — not just steady — pull over safely and do not continue driving. A flashing CEL indicates an active misfire or critical failure that can cause catalytic converter damage within minutes or permanent engine harm within miles. Contact a certified mechanic immediately. Do not attempt roadside repairs on high-severity codes unless you are trained to do so.
Once the fault is repaired, C1922 can be cleared using any OBD-II scanner. Connect the scanner, navigate to "Clear Codes" or "Erase DTCs," and confirm. The check engine light turns off immediately.
The code will return if the root cause was not actually fixed. The ECM re-detects the fault within 1–3 drive cycles and sets the code again.