Cylinder 6 Exhaust Valve Control Circuit/Open
Code P3445 indicates an open or malfunction in the exhaust valve control circuit for cylinder 6. This circuit is part of the variable valve timing (VVT) system, which adjusts valve timing for optimal performance and emissions. An open circuit means the powertrain control module (PCM) detects no continuity in the solenoid or wiring, preventing proper valve actuation. This can cause rough idle, reduced power, and increased emissions.
01. Most Common Causes
- Faulty exhaust valve control solenoid on cylinder 6
- Open or shorted wiring in the solenoid circuit
- Corroded or loose electrical connector
- Failed PCM (rare)
02. Symptoms You Will Notice
- Check Engine Light on
- Rough idle or misfire on cylinder 6
- Reduced engine power and fuel economy
- Failed emissions test
03. Step-by-Step Diagnosis
Step 1: Scan for codes and record freeze frame data.
Step 2: Visually inspect the wiring and connector at cylinder 6 exhaust valve solenoid for damage or corrosion.
Step 3: Use a multimeter to check resistance of the solenoid (typically 6-12 ohms) and compare to specifications.
Step 4: Check for battery voltage and ground at the solenoid connector with key on.
Step 5: If wiring and solenoid are good, test PCM output with a scan tool or oscilloscope.
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 poor engine performance, increased emissions, and potential damage to the catalytic converter.
How much does it cost to fix?▼
Repair costs typically range from $150 to $400, including parts (solenoid $50-$150) and labor ($100-$250).