P1645
Evaporative Emission Purge Solenoid Output Circuit
P1645 is an OBD-II diagnostic trouble code meaning: Evaporative Emission Purge Solenoid Output Circuit. Common causes: purge solenoid valve malfunction, open or short circuit in valve control circuit. Estimated repair cost: $17–56.
Symptoms
- Check Engine light comes on
- Increased fuel consumption
- Unstable engine idling
- Smell of gasoline in the cabin or under the hood
- Dips during acceleration
Causes
- Purge solenoid valve malfunction
- Open or short circuit in valve control circuit
- Oxidation or poor contact in valve connectors
- Valve circuit relay or fuse failure
- Problems with the engine control unit (rare)
How to Fix
- Check purge valve circuit fuse
- Check the resistance and functionality of the purge valve
- Inspect wiring and connectors for damage
- Check the presence of a control signal from the ECU
- Replace faulty purge valve if necessary
Related codes
Error P1645 by Vehicle Brand
FAQ
What does the P1645 code mean?
P1645 is an OBD-II diagnostic trouble code that indicates: Evaporative Emission Purge Solenoid Output Circuit
What causes a P1645 error code?
The most common causes of P1645 include: Purge solenoid valve malfunction; Open or short circuit in valve control circuit; Oxidation or poor contact in valve connectors; Valve circuit relay or fuse failure.
How do I fix a P1645 diagnostic trouble code?
To fix P1645: Check purge valve circuit fuse. Check the resistance and functionality of the purge valve. Inspect wiring and connectors for damage. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P1645?
Yes, but get it checked soon
How much does it cost to fix P1645?
The estimated repair cost for P1645 is $17–56. Actual cost depends on your vehicle, location, and labor rates.
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