P3401
Cylinder 1 Deactivation/Intake Valve Control Circuit/Open
P3401 is an OBD-II diagnostic trouble code meaning: Cylinder 1 Deactivation/Intake Valve Control Circuit/Open. Common causes: broken wire in the control circuit, solenoid valve malfunction. Estimated repair cost: $17–89.
Symptoms
- Engine transition to emergency mode
- Reduced engine power
- Increased fuel consumption
- Unstable engine operation
Causes
- Broken wire in the control circuit
- Solenoid valve malfunction
- Short circuit in the circuit
- Problems with the engine control unit
- Oxidation of contacts
How to Fix
- Check the integrity of wiring and connectors
- Test solenoid valve resistance
- Check voltage on control circuit
- Inspect the engine control unit for damage
- If necessary, replace faulty components
Related codes
Error P3401 by Vehicle Brand
FAQ
What does the P3401 code mean?
P3401 is an OBD-II diagnostic trouble code that indicates: Cylinder 1 Deactivation/Intake Valve Control Circuit/Open
What causes a P3401 error code?
The most common causes of P3401 include: Broken wire in the control circuit; Solenoid valve malfunction; Short circuit in the circuit; Problems with the engine control unit.
How do I fix a P3401 diagnostic trouble code?
To fix P3401: Check the integrity of wiring and connectors. Test solenoid valve resistance. Check voltage on control circuit. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P3401?
Limited driving only, diagnose soon
How much does it cost to fix P3401?
The estimated repair cost for P3401 is $17–89. Actual cost depends on your vehicle, location, and labor rates.
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