What Does P3466 Mean?
The PCM detects that cylinder 9's intake valve control circuit is not responding as expected during activation/deactivation commands. The circuit has continuity but valve timing or operation is outside acceptable parameters.
Common Causes
35%
Sluggish or mechanically binding intake valve control solenoid
25%
Low engine oil level or pressure affecting hydraulic valve actuation
20%
Restricted oil passages in cylinder head or valve control system
12%
Excessive resistance in wiring harness or poor connections
8%
Mechanical wear in valve train components affecting deactivation mechanism
Diagnostic Steps
1
Step 1: Check engine oil level and condition; verify oil pressure meets specifications using mechanical gauge
2
Step 2: Monitor intake valve solenoid response time using scan tool PID data during activation commands
3
Step 3: Remove and inspect intake valve control solenoid for debris, carbon buildup, or mechanical damage
4
Step 4: Test solenoid electrical response with power and ground applied directly; should click audibly and show proper current draw
5
Step 5: If solenoid tests good, inspect valve train components and oil control valve for mechanical issues or blockages
Estimated Repair Cost
$150 - $900
Parts + labor, varies by vehicle and location
The PCM detects that cylinder 9's intake valve control circuit is not responding as expected during activation/deactivation commands. The circuit has continuity but valve timing or operation is outside acceptable parameters.
The most common cause of P3466 (Cylinder 9 Deactivation/Intake Valve Control Circuit Performance) is: Sluggish or mechanically binding intake valve control solenoid
Typical repair costs for P3466 range from $150 to $900, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Cylinder 9 may not deactivate properly, leading to reduced fuel economy and possible engine vibration. Generally safe to drive but continued operation may lead to catalytic converter damage or engine mechanical wear.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P3466 to identify the root cause.
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Quick Info
Category
Powertrain
System
Variable Valve Timing/Cylinder Deactivation System
Difficulty
Type
Generic (SAE)
Recommended Tools
OBD2 Scanner
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