What causes a SPN 523837 code?

SPN 523837 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 523837 code?

Drivability depends on the severity. Check the severity rating and verified driver reports on this page before continuing to drive with SPN 523837 active.

How do I fix SPN 523837?

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 523837

Brake wear sensor fault - steer axle

What it means

This code signifies a fault with a brake wear sensor on a steer axle, leading to inaccurate brake lining wear monitoring. The likely root cause is a damaged sensor, wiring problem, or excessive debris accumulation.