Cylinder 2 Exhaust Valve Control Circuit High
The P3416 code indicates that the engine control module (ECM) has detected a high voltage condition in the exhaust valve control circuit for cylinder 2. This circuit controls the variable valve timing or lift mechanism for the exhaust valve. A high voltage reading typically suggests a short to power, a faulty actuator, or an issue with the wiring or connector. This can lead to improper valve operation, affecting engine performance and emissions.
1. Most Common Causes
- Short to battery voltage in the wiring of cylinder 2 exhaust valve control circuit
- Faulty cylinder 2 exhaust valve control solenoid/actuator (internal short)
- Damaged, corroded, or pushed-back terminals in the solenoid or PCM connector
- Faulty powertrain control module (PCM) with internally shorted output driver
- Solenoid ground circuit issues causing false high voltage readings
2. Symptoms You Will Notice
- Check Engine Light illuminated
- Rough idle or misfire on cylinder 2
- Reduced engine power or hesitation
- Poor fuel economy
3. Step-by-Step Diagnosis
Step 1: Scan for codes and record freeze frame data.
Step 2: Visually inspect wiring and connector at cylinder 2 for damage, corrosion, or shorts.
Step 3: Use a multimeter to check voltage at the exhaust valve actuator connector; compare to specifications.
Step 4: Test the actuator resistance and operation; replace if out of range.
Step 5: Clear codes and test drive; if code returns, check ECM for faults.
4. Frequently Asked Questions
Is it safe to drive with this code?▼
It is not recommended to drive long distances as it can cause engine performance issues and potential damage to the catalytic converter. Limp mode may activate.
How much does it cost to fix?▼
Diagnosis typically costs $50-$150. Repair costs vary: wiring repair $100-$300, actuator replacement $200-$600, ECM replacement $500-$1000.
5. Commonly Affected Makes
This is a generic OBD2 code, potentially applicable to any manufacturer using this diagnostic standard.