P3493
Cylinder 12 Exhaust Valve Control Circuit/Open
P3493 is an OBD-II diagnostic trouble code meaning: Cylinder 12 Exhaust Valve Control Circuit/Open. Common causes: broken wire in the control circuit, control solenoid valve malfunction. Estimated repair cost: $17–89.
Symptoms
- Unstable engine operation
- Reduced engine power
- Increased fuel consumption
- Check Engine Light Is On
- Possible misfire in cylinder 12
Causes
- Broken wire in the control circuit
- Control solenoid valve malfunction
- Wiring harness damage
- Poor contact in the connector
- Malfunction of the engine control unit (rare)
How to Fix
- Check the continuity of the exhaust valve control circuit.
- Inspect the connectors and contacts
- Check the resistance of the solenoid valve
- Replace faulty control valve or wiring
- Reset the error and check the system operation
Related codes
Error P3493 by Vehicle Brand
FAQ
What does the P3493 code mean?
P3493 is an OBD-II diagnostic trouble code that indicates: Cylinder 12 Exhaust Valve Control Circuit/Open
What causes a P3493 error code?
The most common causes of P3493 include: Broken wire in the control circuit; Control solenoid valve malfunction; Wiring harness damage; Poor contact in the connector.
How do I fix a P3493 diagnostic trouble code?
To fix P3493: Check the continuity of the exhaust valve control circuit.. Inspect the connectors and contacts. Check the resistance of the solenoid valve. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P3493?
Limited driving only, diagnose soon
How much does it cost to fix P3493?
The estimated repair cost for P3493 is $17–89. Actual cost depends on your vehicle, location, and labor rates.
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