What this code means

The EGR Vacuum Regulator (EVR) solenoid circuit has a malfunction. This solenoid controls vacuum to the EGR valve. When it fails, EGR valve operation is impaired.

Symptoms

• Check Engine Light
• EGR valve stuck open or closed
• Rough idle (if stuck open)
• Knocking/pinging (if stuck closed)
• Failed emissions

Common causes

• Faulty EVR solenoid
• Wiring issue to EVR solenoid
• Clogged vacuum lines to EGR valve
• PCM driver failure

Diagnostic steps

1. Test EVR solenoid resistance (typically 26-40 ohms)
2. Check wiring and connector
3. Inspect vacuum lines
4. Command solenoid with scan tool and verify operation

Repair notes

Replace EVR solenoid if faulty. Repair vacuum lines. Check wiring.

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