What it means
The control module detects a circuit-low condition in the Bank 2 exhaust valve control solenoid circuit.
At a glance
- Usually lights the check-engine light
- Affects emissions; the car can fail an emissions test
How it works
The bank 2 exhaust valve control solenoid is an electrical actuator used to control exhaust-valve operation. The control module sets this code when circuit voltage is lower than expected, often because the control wire is shorted to ground or the circuit has another low-voltage fault.
Common causes
Most likely first.
- Wiring shorted to ground
- Connector pins corroded - high contact resistance
- Harness chafing through insulation
Symptoms
- Check engine light on
- Rough running or reduced engine performance
- Poor fuel economy
How to diagnose it
- Record freeze-frame data and check for related exhaust-valve codes to see when the bank 2 circuit fault was detected.
- Inspect the bank 2 exhaust solenoid connector and harness for chafing, exposed wire, corrosion, or contact with ground.
- Use the manufacturer's wiring information to check the bank 2 control circuit for a short to ground.
- Test the solenoid coil and circuit continuity against the manufacturer's specification.
- If the wiring and solenoid pass, verify the control-module output using the manufacturer's diagnostic procedure.
Common fixes
- Repair chafed bank 2 solenoid wiring that is shorted to ground.
- Clean or repair corroded or damaged terminals at the bank 2 exhaust solenoid connector.
- Replace the bank 2 exhaust valve control solenoid if it fails electrical testing.
- Repair a confirmed control-module circuit fault after checking the solenoid and wiring.
Can I keep driving?
Drive gently only if the engine remains stable, and avoid towing or hard acceleration if it runs roughly or loses power. A persistent fault can disrupt bank 2 exhaust-valve control and worsen drivability.
A code shows where the control module detected a fault, not always which part failed. Check the causes in order and confirm with a test before replacing parts. Have several codes? Check them together
This is a generic code: it means the same on every make. The car’s maker may add more detail in its own service information.