What does it mean?
P3416 is a Powertrain (engine, transmission, fuel system) fault code. It indicates: Cylinder 2 Exhaust Valve Control Circuit High . This is a standardised OBD-II code. The technical definition is the same regardless of the make or model of vehicle, although specific causes and symptoms can vary between vehicles.
Symptoms
- MIL (check engine lamp) on with the exhaust valve control function disabled
- Engine holds its default valve timing behaviour, feeling flat at higher rpm
- Uneven idle and mild shake, especially when the engine is warm
- Valve train ticking that does not change when the system is commanded
- Increased fuel consumption over normal driving
- Possible cylinder 2 misfire codes stored alongside this one
Likely causes
- Control wire shorted to a battery-fed circuit, often where two looms are taped together
- Open ground or high-resistance return path leaving the output floating high
- Solenoid coil open internally so no load pulls the circuit down
- Corroded, oil-fouled or loosened terminals in the solenoid connector
- Water intrusion into a connector causing a bridge between a power feed and the control pin
- Failed output driver inside the PCM (powertrain control module)
How to fix it
- Note the freeze frame conditions and check whether the code sets at idle, under load or only when hot
- Visually inspect the solenoid connector and the harness branch for oil, chafe marks and heat damage
- Back-probe the control circuit with the key on and compare the reading with a healthy cylinder's solenoid on the same bank
- Disconnect both the solenoid and the module, then check the control wire for continuity to any power feed
- Measure the solenoid resistance; an open coil explains a high reading without any harness fault
- Check the ground return and the connector terminal tension with a proper probe, not by eye
- Repair the wiring or replace the solenoid, then command the circuit through the scan tool to verify the fix