Cylinder 10 Deactivation/Intake Valve Control Circuit High
The P3476 code indicates that the powertrain control module (PCM) has detected a high voltage condition in the cylinder deactivation or intake valve control circuit for cylinder 10. This system uses solenoids or actuators to disable intake valves during low-load conditions to improve fuel economy. A high voltage reading suggests a short to power, faulty actuator, or wiring issue, which can prevent proper valve operation and trigger the check engine light.
01. Most Common Causes
- Faulty cylinder deactivation solenoid/actuator on cylinder 10
- Short to voltage in the control circuit wiring or connector
- Damaged PCM (rare)
02. Symptoms You Will Notice
- Check engine light illuminated
- Reduced fuel economy
- Engine misfire or rough idle
- Possible hesitation or lack of power
03. Step-by-Step Diagnosis
Step 1: Use a scan tool to confirm the code and check for related codes.
Step 2: Visually inspect the wiring and connector for cylinder 10 deactivation solenoid for damage, corrosion, or shorts.
Step 3: Test the solenoid resistance with a multimeter and compare to manufacturer specs.
Step 4: Check for voltage at the solenoid connector with key on; if voltage is present when it shouldn't be, repair short to power.
04. Commonly Affected Makes
05. Frequently Asked Questions
Is it safe to drive with this code?▼
It is not recommended to drive long distances as it can cause engine misfire, reduced performance, and potential damage to the catalytic converter.
How much does it cost to fix?▼
Diagnosis typically costs $50-$150. Replacing a solenoid or repairing wiring can range from $100-$400 depending on labor and parts.