P264E
A Rocker Arm Actuator Position Sensor Circuit Intermittent/Erratic Bank 1
The position sensor signal jumps or drops out intermittently. Usually a loose connector or a chafed wire in the harness.
- Check engine light: Yes
- Emissions related: No
- Repair difficulty: medium
Common causes
Ordered by how often each turns out to be the cause.
- Sensor connector not fully seatedCommon
- Harness chafed against valve cover or cam carrierPossible
- Connector with intermittent contact under vibrationLess likely
Parts involved
- Rocker Arm Position Sensor A B1
- Wiring Harness
P264E is a generic OBD-II code defined by SAE J2012. Exact wording and diagnostic procedure vary by manufacturer and model. Code definitions are drawn from the public-domain OBDex dataset; the workshop notes are our own.