What Does P3452 Mean?
The PCM has detected a voltage signal higher than expected in the cylinder 7 intake valve control circuit. This typically indicates an open circuit, high resistance, or loss of ground in the solenoid control circuit.
Common Causes
35%
Open circuit in wiring harness to cylinder 7 intake valve solenoid
30%
Failed cylinder 7 intake valve control solenoid with open coil winding
20%
Loose or corroded connector at valve solenoid causing high resistance
10%
Poor ground connection in valve control circuit
5%
PCM driver circuit failure
Diagnostic Steps
1
Step 1: Disconnect cylinder 7 intake valve solenoid and measure resistance; reading should be within specifications (typically 4-12 ohms); infinite resistance indicates open coil
2
Step 2: Check voltage supply at solenoid connector with key on, engine off; should read battery voltage on power feed wire
3
Step 3: Inspect connector terminals for looseness, corrosion, or pushed-back pins; wiggle test while monitoring scan data
4
Step 4: Trace wiring harness for breaks, cuts, or damage; pay attention to areas with movement or heat exposure
5
Step 5: Verify ground circuit integrity by checking voltage drop between solenoid ground and battery negative during operation
Estimated Repair Cost
$150 - $800
Parts + labor, varies by vehicle and location
The PCM has detected a voltage signal higher than expected in the cylinder 7 intake valve control circuit. This typically indicates an open circuit, high resistance, or loss of ground in the solenoid control circuit.
The most common cause of P3452 (Cylinder 7 Deactivation/Intake Valve Control Circuit High) is: Open circuit in wiring harness to cylinder 7 intake valve solenoid
Typical repair costs for P3452 range from $150 to $800, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Safe to drive short distances but repair soon. May cause reduced fuel economy, rough idle, and possible misfires on cylinder 7.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P3452 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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