Air Suspension RR Air Spring/Shock Solenoid Output Circuit Open
The electrical circuit controlling the rear-right air suspension solenoid is broken or disconnected, so the system can't inflate or deflate that corner. Think of it like a water valve with a broken wire—the valve itself might be fine, but the signal to open it never arrives.
The ECM sends a voltage signal to the RR air spring solenoid and monitors the circuit for proper resistance and current draw. When the circuit is open (broken wire, disconnected connector, or failed solenoid coil), no current flows and the ECM detects zero or abnormal impedance.
| Parameter | Normal Range | Fault Condition |
|---|---|---|
| Solenoid Coil Resistance | 4–12 ohms (typical air suspension solenoid) | Open circuit (infinite ohms / no continuity) |
| Circuit Current Draw | 0.5–2.0 amps during actuation | 0 amps or no response |
Code C1796 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, C1796 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.