Exhaust Pressure Regulator Vent Solenoid Control Circuit Low

Where it lives

For P2170, the circuit described runs through the solenoid. The description of P2170 reports a fault at the solenoid.

Check these first

• A short to ground in the exhaust pressure regulator vent solenoid control circuit
• An open in the vent solenoid control circuit
• A failed exhaust pressure regulator vent solenoid
• Corrosion at the vent solenoid connector
• A failed ECM

What to do next

1. Read the vent solenoid control circuit voltage on a scan tool
2. Test the control circuit for a short to ground
3. Check the vent solenoid resistance
4. Inspect the vent solenoid connector for corrosion
5. Replace the exhaust pressure regulator vent solenoid if the circuit tests good
6. Clear the code and retest

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