What causes a P2430 code?

P2430 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 P2430 code?

Drivability depends on the severity. Check the severity rating and verified driver reports on this page before continuing to drive with P2430 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

P2430

Secondary Air Injection System Flow/Pressure Sensor Circuit Bank 1

What it means

The Engine Control Module (ECM) detects an electrical or rational fault in the Secondary Air Injection (SAI) pressure sensor circuit, which is used to monitor air flow into the exhaust system for emissions cold-start reduction.