SPN 520516 — factory code Meritor (ex-WABCO) and SITRAK

Safe to driveUntil the next service

SPN 520516 is a manufacturer number outside the standard J1939 table: different makes can put different things under it. Below — how it is worded by Meritor (ex-WABCO) and SITRAK, and what the second half of the code (FMI) means.

Meritor (ex-WABCO)

FMI 7	Wheel Speed Permanent Slip Failure at Axle 8 Right
FMI 9	Wheel Speed Jump Down Detection at Axle 8 Right
FMI 13	Impermissable Tire Size Detected at Axle 8 Right
FMI 14	Impermissable Deviation of Tire Size Detected at Axle 8 Right

SITRAK

FMI 2

DEF consumption deviation too large: driver inducement, level 1. Scan tool code: P1071. Effect: Torque limited, MIL on, power may drop to 60%.

What FMI means in J1939

SPN 520516 FMI 2520516/2 · 520516.2	data erratic or intermittent
SPN 520516 FMI 7520516/7 · 520516.7	mechanical system not responding
SPN 520516 FMI 9520516/9 · 520516.9	abnormal update rate
SPN 520516 FMI 13520516/13 · 520516.13	calibration out of range
SPN 520516 FMI 14520516/14 · 520516.14	manufacturer-specific instructions

Can I keep driving

Safe to drive. Below — how much time you have and what happens if you keep going.

What happens if you keep driving

Time you have: Until the next service

A standalone fault with no immediate consequences for driving.

Show the codes at the next service. If a second code from the same system appears, stop putting it off.

Nearby: other

• SPN 520511
• SPN 520512
• SPN 520513
• SPN 520514
• SPN 520515
• SPN 520517
• SPN 520520
• SPN 520521
• SPN 520522
• SPN 520523

Scanner threw several codes at once? Paste the whole list — we will show which one is the root cause and which ones simply followed.