What this code means

Malfunction in the air suspension inlet solenoid valve that allows air into the air springs.

Symptoms

• Vehicle stuck at low height
• Cannot raise suspension
• Compressor runs but vehicle stays low
• Suspension warning light

Common causes

• Inlet solenoid failure
• Wiring fault
• Valve block internal failure
• Solenoid stuck closed

Diagnostic steps

1. Test solenoid resistance
2. Command solenoid operation with scan tool
3. Check wiring
4. Verify compressor is building pressure
5. Inspect valve block for internal leaks

Repair notes

Replace inlet solenoid or valve block assembly.

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