What causes a SPN 271 code?

SPN 271 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 SPN 271 code?

Drivability depends on the severity. Check the severity rating and verified driver reports on this page before continuing to drive with SPN 271 active.

How do I fix SPN 271?

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

J1939 SPN

SPN 271

J1939 SPN 271 — Fuel/Air parameter

What it means

Low Pressure Fuel / Fuel Pressure Control Valve circuit fault. This indicates the ECM has detected an electrical issue (short or open) in the circuit that controls the fuel pressure regulator or actuator.