DIAGNOSTIC CODES
CONDITION SPN FMI
Front Wheel Back Drive (Active Descent System) Driver
Circuit Grounded
520203 4
ESC 65312 checksum failure 65557 23
Brake Lamp Shorted to Battery 520320 3
System Too Lean Bank 2 520205 17
Coolant Thermostat (Coolant Temperature Below
Thermostat Regulating Temperature)
110 17
Engine Coolant Temperature Sensor 1 Circuit
Intermittent/Erratic
110 10
Rear Differential Output Driver Circuit Open/Grounded 746 5
System Too Lean Bank 1 520204 17
Rear Differential Output Driver Circuit Grounded 746 4
Knock/Combustion Vibration Sensor "A" Circuit Range/
Performance
731 2
Rear Differential Output Driver Circuit Short to B+ 746 3
System Power Voltage Below Critical Level 168 1
Engine Temperature Sensor Temperature above normal
range
110 15
System Too Rich Bank 2 520205 15
System Too Rich Bank 1 520204 15
Manifold Absolute Pressure/Barometric Pressure
Sensor Circuit Range/Performance
102 2
Manifold absolute pressure sensor out of range low 102 17
Manifold absolute pressure sensor out of range high 102 15
Charge Air Cooler Cooling Fan Control Circuit Low 524280 4
Charge Air Cooler Cooling Fan Control Circuit High 524280 3
166
TROUBLESHOOTING
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