The P3492: Cylinder 12 Deactivation/Intake Valve Control Circuit High refers to a situation where there is high voltage in the intake valve control circuit for Cylinder 12. This issue may be caused by faulty wiring or connections, or a malfunctioning control solenoid, leading to improper functioning of the intake valves.
P3492 – Quick Overview
Code | Information |
---|---|
Meaning | P3492: Cylinder 12 Deactivation/Intake Valve Control Circuit High |
Is it serious? | Yes, this code can lead to performance issues and may cause engine misfiring. |
Possible causes | – High voltage in the intake valve control circuit for Cylinder 12 – Faulty wiring or connections – Malfunctioning control solenoid |
How to diagnose? | – Check the voltage levels in the intake valve control circuit for Cylinder 12 – Inspect wiring and connections for faults – Test the control solenoid for proper operation – Repair or replace faulty components as needed |
P3492 Meaning
The P3492: Cylinder 12 Deactivation/Intake Valve Control Circuit High code indicates that the intake valve control circuit for Cylinder 12 is experiencing high voltage. This situation can arise from damaged wiring, poor connections, or a faulty control solenoid, resulting in improper operation of the intake valves and potentially affecting engine performance.
Step-by-step diagnostic guide
Action | Description | Tools Needed |
---|---|---|
Check for Other Codes | Use an OBD-II scanner to check for additional codes that may provide further context for the issue. | OBD-II Scanner |
Check Voltage Levels | Measure the voltage levels in the intake valve control circuit for Cylinder 12 to determine if they exceed the expected range. | Multimeter |
Inspect Wiring and Connections | Visually inspect wiring and connections for any faults, damage, or corrosion that could contribute to high voltage levels. | Flashlight, Multimeter |
Test the Control Solenoid | Test the control solenoid to ensure it is functioning properly and is not causing excessive voltage output. | Multimeter, Diagnostic Tool |
Repair or Replace Faulty Components | Based on the findings from previous steps, repair or replace any damaged wiring, connectors, or the solenoid as necessary. | Basic Hand Tools |
Clear the Code and Test Drive | After repairs, clear the code using an OBD-II scanner and take the vehicle for a test drive to verify that the issue is resolved. | OBD-II Scanner, Vehicle Owner’s Manual |
Recheck for Codes | After the test drive, re-scan the vehicle to ensure the P3492 code has not returned. If it does, further diagnosis may be needed. | OBD-II Scanner |

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Hi, I am Juraj “Yuri” Lukacko. I got frustrated by unhelpful and scammy mechanics, so I decided to learn everything about car diagnostics myself. I test dozens of new car diagnostic tools every month along with learning new strategies to fix and customize cars. About Juraj Lukacko (Yuri)