Cylinder 10 Deactivation/Intake Valve Control Circuit Low
The P3475 code indicates that the powertrain control module (PCM) has detected a low voltage condition in the circuit that controls the cylinder deactivation and intake valve for cylinder 10. This system uses solenoids or actuators to disable the intake valves during low-load conditions to improve fuel economy. A low circuit voltage suggests a short to ground, open circuit, or a faulty actuator/solenoid, which can prevent proper valve operation and trigger the check engine light.
01. Most Common Causes
- Faulty cylinder deactivation solenoid/actuator for cylinder 10
- Short to ground or open in the control circuit wiring
- Corroded or damaged connector at the solenoid or PCM
- Failed PCM (rare)
02. Symptoms You Will Notice
- Check Engine Light illuminated
- Reduced fuel economy
- Engine misfire or rough idle
- Possible loss of power or hesitation
03. Step-by-Step Diagnosis
Step 1: Use a scan tool to retrieve all codes and freeze frame data. Clear codes and test drive to see if P3475 returns.
Step 2: Visually inspect the wiring and connector for cylinder 10 deactivation solenoid for damage, corrosion, or loose pins.
Step 3: Measure voltage at the solenoid connector with the engine running. Compare to manufacturer specs (typically 12V or 5V reference).
Step 4: Test the solenoid resistance with a multimeter. Compare to specs; replace if out of range.
Step 5: If wiring and solenoid are good, check for PCM output signal using a lab scope or test light. Replace PCM if no signal.
04. Commonly Affected Makes
05. Frequently Asked Questions
Is it safe to drive with this code?▼
It is not recommended to drive long distances with this code, as it can cause engine misfire, reduced fuel economy, and potential damage to the catalytic converter. Have it diagnosed promptly.
How much does it cost to fix?▼
The cost typically ranges from $50 to $150 for diagnosis and repair, depending on the cause. Replacing a solenoid may cost $100-$200, while wiring repairs are usually less.