What it means
The position sensor signal for actuator B on bank 2 is below the lower diagnostic threshold. Wiring faults of this kind typically come from chafing, water ingress at connector seals, or pin push-back — a wiggle test on the harness while the code is active often confirms the location.
At a glance
- Usually lights the check-engine light
How it works
The B rocker arm actuator on bank 2 changes valve lift mode, and its position sensor sends a signal confirming actuator travel. P267C sets when that signal falls below the controller's lower threshold, pointing to a low signal, a short to ground, a sensor fault, or a poor connection.
Common causes
Most likely first.
- Internal short in sensor element
- Signal wire shorted to ground
- Connector pins corroded - high contact resistance
Symptoms
- Check-engine light
- Reduced engine power or performance
How to diagnose it
- Read freeze-frame data and check for related actuator codes, noting whether the low signal occurred during a commanded valve lift change.
- Inspect the bank 2 B position sensor connector and harness for chafing, moisture, corrosion, pushed-back pins, or a loose ground.
- Monitor the sensor reading while gently moving the harness near the bank 2 B connector to look for an intermittent low signal.
- Check the sensor supply, ground, and signal wire for shorts to ground or excessive connection resistance, using the wiring diagram and manufacturer's specification.
- If the wiring checks out, test the B position sensor on bank 2 and inspect the actuator for restricted movement that could affect the reported position.
Common fixes
- Repair a signal wire shorted to ground in the bank 2 B sensor circuit.
- Clean or repair corroded, loose, or pushed-back connector terminals.
- Replace a B rocker arm position sensor on bank 2 that has an internal low output.
- Repair a sticking bank 2 B actuator if the sensor signal remains low despite a sound circuit.
Can I keep driving?
Reduced power or performance can make acceleration less predictable, so avoid hard acceleration and risky overtaking. If the engine runs very roughly or power drops sharply, stop safely and arrange diagnosis.
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.