EVAP Solenoid Output Circuit Malfunction (Chevrolet)
What does P1675 mean?
The P1675 code means the vehicle's onboard diagnostic system has detected: EVAP Solenoid Output Circuit Malfunction (Chevrolet). This is a low severity code.
Common Symptoms
- Check Engine Light on
- Failed emissions test
- Fuel vapor odor
- Purge valve clicking sound from engine bay
- Rough idle after refueling
Probable Causes (Ranked by Likelihood)
- Faulty EVAP purge solenoid valve Very High
- Wiring issue between PCM and purge solenoid High
- Clogged or damaged EVAP lines Moderate
- PCM EVAP solenoid driver failure Low
Step-by-Step Diagnostic Procedure
-
Locate the EVAP purge solenoid on the intake manifold or near the throttle body.
-
Check the solenoid connector for corrosion and proper seating.
-
Measure solenoid resistance (typically 20-30 ohms). Replace if open or shorted.
-
Command the purge solenoid on and off with a scan tool. You should hear it click and feel vacuum through the line.
-
If the solenoid works but the code persists, check for shorts or opens in the wiring to the PCM.
Frequently Asked Questions
What does the EVAP purge solenoid do?
It controls the flow of fuel vapors from the charcoal canister into the intake manifold to be burned, preventing vapors from escaping into the atmosphere.
Can I pass emissions with P1675?
No. Any EVAP system code will cause an emissions test failure because the system is required for vapor recovery.
Is the purge solenoid the same as the vent solenoid?
No. The purge solenoid controls vapor flow to the engine, while the vent solenoid controls airflow into the canister. They are different components.