What causes a P0470 code?

P0470 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 P0470 code?

Drivability depends on the severity. Check the severity rating and verified driver reports on this page before continuing to drive with P0470 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

P0470

P0470 - Exhaust Pressure Sensor Malfunction

What it means

Indicates a generic circuit failure within the exhaust back pressure sensor or its related wiring. This sensor monitors exhaust pressure to manage EGR flow and VGT turbocharger vane positions.