C1416: RF Shock Solenoid Short to B+
The C1416 code indicates that the suspension control module (e.g., the Adaptive Variable Suspension ECU) has detected a short circuit to battery positive (B+) in the right front shock absorber solenoid circuit. This solenoid regulates hydraulic fluid flow inside the shock to actively adjust damping stiffness. The ECU monitors circuit resistance and voltage; when it detects abnormally high voltage or direct continuity with power, it logs this manufacturer-specific fault and typically disables active control for that wheel or the entire system, entering a fail-safe mode.
1. Commonly Affected Makes
2. Most Common Causes
- Short circuit in the wiring harness between the right front shock solenoid and the control module to a B+ wire
- Right front shock solenoid with an internally shorted coil
- Damaged, bent, or corroded pins in the shock or control module connector causing contact between signal/control terminals and power
- Internal failure of the suspension control module (ECU) applying incorrect voltage to the circuit
- Mechanical damage to wiring near the chassis or suspension components causing chafing and shorting to power wires
3. Symptoms You Will Notice
- Check Engine Light or Suspension Warning Light illuminated
- Reduced ride quality or harshness from the right front suspension
- Suspension system may default to a fixed damping setting (fail-safe mode)
4. Step-by-Step Diagnosis
Scan for codes and verify C1416 is present; note any related codes
Visually inspect the right front shock wiring harness and connector for damage, corrosion, or chafing
Measure voltage at the shock solenoid connector with key on; should be near 0V when not commanded; if B+ is present, suspect short to power
Test the shock solenoid resistance; compare to manufacturer specs (typically 2-10 ohms); an open or shorted coil indicates a faulty solenoid
Check for continuity between the solenoid control wire and B+; if present, isolate and repair the short in the harness
If all wiring and solenoid test good, suspect a failed suspension control module
5. Frequently Asked Questions
Is it safe to drive?▼
Yes, but the suspension will likely enter a fail-safe mode, resulting in reduced ride comfort and handling. It is safe for short trips, but you should have it diagnosed and repaired soon to restore full suspension function.
How much does it cost to fix?▼
Repair costs typically range from $150 to $600, depending on the cause. A simple wiring repair may cost $150-$300, while replacing a shock solenoid or control module can run $400-$600 or more.