What causes a SPN 62 code?

SPN 62 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 62 code?

Drivability depends on the severity. Check the severity rating and verified driver reports on this page before continuing to drive with SPN 62 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

J1939 SPN

SPN 62

J1939 SPN 62 — Engine parameter

What it means

SPN 62 typically refers to a fault within the Engine Retarder (Engine Brake) Solenoid #1 circuit, indicating an electrical short or open circuit in the braking actuator system.