What causes a P2260 code?

P2260 can be triggered by several issues — see the verified probable causes and step-by-step diagnostics shared by mechanics and owners on OBDIY.

Can I drive with a P2260 code?

Drivability depends on the severity. Check the severity rating and verified driver reports on this page before continuing to drive with P2260 active.

Follow the step-by-step diagnostic on this page, then read the verified fixes contributed by other Heavy Truck owners — the answer marked "Verified Cause" worked for the original poster.

OBDIY

OBD-II

P2260

Turbocharger/Supercharger Bypass Valve Control Circuit Open

What it means

The Engine Control Module (ECM) has detected an open circuit in the turbocharger bypass valve (dump valve) control circuit. This indicates a complete break in the wiring or a failed internal solenoid that prevents the valve from dumping excess boost pressure.