What Does P3481 Mean?
The PCM has detected an open circuit or complete loss of communication with the cylinder 11 deactivation or intake valve control system. The control circuit is not responding, preventing proper cylinder deactivation or variable valve timing operation.
Common Causes
30%
Disconnected or severely corroded electrical connector at cylinder 11 intake valve solenoid
25%
Broken or severed wire in intake valve control harness
25%
Failed intake valve control solenoid with internal open circuit
15%
Blown fuse or failed relay in valve control power supply circuit
5%
PCM connector terminal damage or PCM internal failure
Diagnostic Steps
1
Step 1: Visually inspect cylinder 11 intake valve control solenoid connector for damage, corrosion, or disconnection
2
Step 2: Check applicable fuses and relays related to valve control system operation
3
Step 3: Test for continuity through entire wiring harness from PCM to solenoid connector
4
Step 4: Measure resistance of intake valve control solenoid; infinite resistance indicates open circuit
5
Step 5: Inspect PCM connector terminals for bent pins, corrosion, or pushed-back terminals
Estimated Repair Cost
$200 - $900
Parts + labor, varies by vehicle and location
The PCM has detected an open circuit or complete loss of communication with the cylinder 11 deactivation or intake valve control system. The control circuit is not responding, preventing proper cylinder deactivation or variable valve timing operation.
The most common cause of P3481 (Cylinder 11 Deactivation/Intake Valve Control Circuit/Open) is: Disconnected or severely corroded electrical connector at cylinder 11 intake valve solenoid
Typical repair costs for P3481 range from $200 to $900, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Vehicle is safe to drive but cylinder deactivation will not function, resulting in reduced fuel economy. Engine may run roughly if intake valve timing is affected.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P3481 to identify the root cause.
OBDHut Mobile App
Scan codes directly from your car with the OBDHut app.
Coming Soon
Quick Info
Category
Powertrain
System
Cylinder Deactivation/Variable Valve Timing System
Difficulty
Type
Generic (SAE)
Recommended Tools
OBD2 Scanner
A quality scan tool helps you read codes, view live data, and clear faults.
