U064F
Lost Communication With Intake Manifold Runner Position Sensor Bank 1
The vehicle bus reports loss of communication with smart intake manifold runner position sensor on bank 1. Variable runner control loses its actual feedback; combustion may revert to a default runner setting.
- Check engine light: Yes
- Emissions related: Yes
- Repair difficulty: medium
Symptoms
- Multiple warning lights may illuminate
- Affected modules may go into limp mode or shut down
- Specific functions inoperative depending on module
- Diagnostic tools may show communication faults
Common causes
Ordered by how often each turns out to be the cause.
- Bus wiring open or shortedCommon
- Module without power or groundPossible
- Module failedPossible
Parts involved
- Intake Runner Position Sensor Bank 1
- Vehicle Bus Wiring
U064F 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.