DIAGNOSTIC CODES
COMPONENT CONDITION SPN FMI
Active Descent
Control System
Driver Circuit Open/
Grounded
520203 5
Driver Circuit Short to
B+
520203 3
Driver Circuit
Grounded
520203 4
Idle Speed Speed Too High
520211 3
Speed Too Low
520211 4
Right Hand Control Momentary Driveline
Mode Switch Press
520468 31
DIAGNOSTIC CODES
COMPONENT CONDITION SPN FMI
EPS MODELS ONLY
Vehicle Speed Sensor Data Valid But Above
Normal Operational
Range - Most Severe
Level
84 0
Data Erratic,
Intermittent Or
Incorrect
84 2
Abnormal Rate Of
Change
84 10
Received Network
Data In Error
84 19
System Power Data Valid But Above
Normal Operational
Range - Most Severe
Level
168 0
Voltage Above
Normal, Or Shorted To
High Source
168 3
Voltage Below
Normal, Or Shorted To
Low Source
168 4
Engine Speed Data Valid But Above
Normal Operational
Range - Most Severe
Level
190 0
167
TROUBLESHOOTING
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