What Does P3453 Mean?
The PCM has detected an open circuit in the cylinder 7 exhaust valve control system. The electrical circuit controlling exhaust valve deactivation is not completing, preventing proper cylinder deactivation operation.
Common Causes
40%
Broken or disconnected wiring to cylinder 7 exhaust valve solenoid
30%
Failed cylinder 7 exhaust valve control solenoid with open coil
20%
Corroded or loose connector at exhaust valve solenoid
7%
Blown fuse or fusible link in valve control power circuit
3%
PCM internal circuit failure
Diagnostic Steps
1
Step 1: Visually inspect cylinder 7 exhaust valve solenoid connector for damage, corrosion, or disconnection
2
Step 2: Check fuses and relays related to cylinder deactivation system; replace any blown fuses and investigate cause
3
Step 3: Disconnect exhaust valve solenoid and measure coil resistance; infinite reading confirms open circuit in solenoid
4
Step 4: Check continuity of wiring harness from PCM to solenoid; repair any breaks or damaged sections
5
Step 5: Verify power supply and ground circuits are present at solenoid connector with engine running
Estimated Repair Cost
$150 - $900
Parts + labor, varies by vehicle and location
The PCM has detected an open circuit in the cylinder 7 exhaust valve control system. The electrical circuit controlling exhaust valve deactivation is not completing, preventing proper cylinder deactivation operation.
The most common cause of P3453 (Cylinder 7 Exhaust Valve Control Circuit/Open) is: Broken or disconnected wiring to cylinder 7 exhaust valve solenoid
Typical repair costs for P3453 range from $150 to $900, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Vehicle is safe to drive but will experience reduced fuel economy and possible rough idle. Cylinder 7 will not deactivate properly during light load conditions.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P3453 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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