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SPN 524271 — Checksum Error of Parameter group 'Brake Pressure' (Meritor (ex-WABCO))

Do not driveTo the nearest safe stop

SPN 524271 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 what the second half of the code (FMI) means.

Meritor (ex-WABCO)

FMI 0Checksum Error of Parameter group 'Brake Pressure'
FMI 1Checksum Error of Parameter group 'Center of Gravity'
FMI 2Checksum Error of Parameter group 'Function System Configuration'
FMI 3Checksum Error of Parameter group 'Hardware Configuration'
FMI 4Checksum Error of Parameter group 'Speedometer Adjustment'
FMI 5Checksum Error of Parameter group 'Speedometer Adjustment Storage'
FMI 7Parameter group 'Vehicle CAN'
FMI 8Parameter group 'Auxiliary Parkbrake'
FMI 9Checksum Error of Parameter group 'Emergency Stop Signal'
FMI 10Checksum Error of Parameter group 'Global Variant Coding'
FMI 11Checksum Error of Parameter group 'MBT Specific Parameters'
FMI 12Checksum Error of Parameter group 'Platform Storage'
FMI 13Checksum Error of Parameter group 'Model Diagnostics Storage'
FMI 14Checksum Error of Parameter group 'Auxiliary Axles'
FMI 15Checksum Error of Parameter group 'Combination Stability Control'
FMI 16Checksum Error of Parameter group 'Eapu'
FMI 17Checksum Error of Parameter group 'Eapu Storage'
FMI 18Checksum Error of Parameter group 'Esc Sensor'
FMI 20Checksum Error of Parameter group 'GvcTime Stamp Storage'
FMI 21Checksum Error of Parameter group 'Open Loop Pressure Control'
FMI 31Checksum Error of Parameter group 'Closed Loop Pressure Control'

What FMI means in J1939

SPN 524271 FMI 0524271/0 · 524271.0data above normal range (most severe level)
SPN 524271 FMI 1524271/1 · 524271.1data below normal range (most severe level)
SPN 524271 FMI 2524271/2 · 524271.2data erratic or intermittent
SPN 524271 FMI 3524271/3 · 524271.3voltage above normal or shorted high
SPN 524271 FMI 4524271/4 · 524271.4voltage below normal or shorted to ground
SPN 524271 FMI 5524271/5 · 524271.5current below normal or open circuit
SPN 524271 FMI 7524271/7 · 524271.7mechanical system not responding
SPN 524271 FMI 8524271/8 · 524271.8abnormal frequency or pulse width
SPN 524271 FMI 9524271/9 · 524271.9abnormal update rate
SPN 524271 FMI 10524271/10 · 524271.10abnormal rate of change
SPN 524271 FMI 11524271/11 · 524271.11root cause not known
SPN 524271 FMI 12524271/12 · 524271.12faulty device or component
SPN 524271 FMI 13524271/13 · 524271.13calibration out of range
SPN 524271 FMI 14524271/14 · 524271.14manufacturer-specific instructions
SPN 524271 FMI 15524271/15 · 524271.15above normal — low severity
SPN 524271 FMI 16524271/16 · 524271.16above normal — moderate severity
SPN 524271 FMI 17524271/17 · 524271.17below normal — low severity
SPN 524271 FMI 18524271/18 · 524271.18below normal — moderate severity
SPN 524271 FMI 20524271/20 · 524271.20data drifted high
SPN 524271 FMI 21524271/21 · 524271.21data drifted low
SPN 524271 FMI 31524271/31 · 524271.31condition exists (see manufacturer description)

Can I keep driving

Do not drive. Stop as soon as it’s safe to do so — don’t keep going.

What happens if you keep driving

Time you have: To the nearest safe stop

The code is flagged critical: the manufacturer considers it unsafe to keep driving without checking.

This code alone cannot say what will fail next, so stop at the first safe opportunity and look at it on the spot.

That said, the manufacturer flags this code as critical — if in doubt, it is safer to stop and check on the spot.

Nearby: other

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