P3451
Cylinder 7 Deactivation/Intake Valve Control Circuit Low
P3451 is an OBD-II diagnostic trouble code meaning: Cylinder 7 Deactivation/Intake Valve Control Circuit Low. Common causes: open or short circuit in wiring harness, malfunction of the cylinder deactivation solenoid valve. Estimated repair cost: $17–89.
Symptoms
- Increased fuel consumption
- Rough engine operation
- Reduced engine power
- Check Engine Light Illuminates
- Disabling the cylinder deactivation system
Causes
- Open or short circuit in wiring harness
- Malfunction of the cylinder deactivation solenoid valve
- Control circuit connector problems
- Engine control unit (ECU) malfunction
- Mechanical problems with the cylinder deactivation mechanism
How to Fix
- Check the integrity of the wiring harness and connectors
- Check the resistance of the cylinder deactivation solenoid valve
- Check control circuit voltage
- If necessary, replace the solenoid valve
- If the problem persists, check the engine control unit
Related codes
Error P3451 by Vehicle Brand
FAQ
What does the P3451 code mean?
P3451 is an OBD-II diagnostic trouble code that indicates: Cylinder 7 Deactivation/Intake Valve Control Circuit Low
What causes a P3451 error code?
The most common causes of P3451 include: Open or short circuit in wiring harness; Malfunction of the cylinder deactivation solenoid valve; Control circuit connector problems; Engine control unit (ECU) malfunction.
How do I fix a P3451 diagnostic trouble code?
To fix P3451: Check the integrity of the wiring harness and connectors. Check the resistance of the cylinder deactivation solenoid valve. Check control circuit voltage. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P3451?
Yes, but get it checked soon
How much does it cost to fix P3451?
The estimated repair cost for P3451 is $17–89. Actual cost depends on your vehicle, location, and labor rates.
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