Cylinder 9 Deactivation/Intake Valve Control Circuit Low
The P3467 code indicates that the powertrain control module (PCM) has detected a low voltage condition in the cylinder 9 deactivation/intake valve control circuit. This circuit is responsible for controlling the oil flow to the valve lifters that deactivate the cylinder under light load to improve fuel economy. A low voltage reading suggests a short to ground, open circuit, or faulty component in the solenoid or wiring.
1. Most Common Causes
- Faulty cylinder deactivation solenoid on cylinder 9
- Short to ground in the wiring or connector
- Open circuit in the control circuit
- Corroded or damaged connector pins
- Failed PCM (rare)
2. Symptoms You Will Notice
- Check Engine Light illuminated
- Reduced fuel economy
- Engine misfire or rough idle
- Loss of power or hesitation
- Cylinder deactivation system inoperative
3. Step-by-Step Diagnosis
Step 1: Scan for additional codes and record freeze frame data.
Step 2: Visually inspect the wiring and connector for cylinder 9 deactivation solenoid for damage, corrosion, or loose connections.
Step 3: Use a multimeter to check the solenoid resistance (typically 10-20 ohms) and compare to specifications.
Step 4: Check for voltage at the solenoid connector with the engine running; should be near battery voltage.
Step 5: If voltage is low, check for shorts or opens in the circuit between the PCM and solenoid.
Step 6: If circuit tests OK, replace the cylinder deactivation solenoid on cylinder 9.
4. Frequently Asked Questions
Is it safe to drive with this code?▼
It is not recommended to drive long distances as the engine may misfire, reducing fuel economy and potentially causing catalytic converter damage. Short trips to a repair shop are acceptable.
How much does it cost to fix?▼
The cost typically ranges from $50 to $150 for diagnosis and repair, including parts and labor. The solenoid itself is relatively inexpensive.
5. Commonly Affected Makes
This is a generic OBD2 code, potentially applicable to any manufacturer using this diagnostic standard.