CAN-Bus ECU Diagnostics & DTC Fault Matrix
J1939 diagnostic trouble code parsing and service van dispatchJ1939 HIGH-SPEED CAN (250 KBPS)
Tata Prima 5530.S
UP-65-BT-9142 • 55T TractorBharatBenz 3528
WB-19-K-4402 • 35T RigAshok Leyland 4220
DL-1M-AH-0081 • 42T Multi-AxleEngine SpeedRPM x100
1,650Optimum Eco
0TORQUE PEAK2,500
Ground SpeedGPS SYNC
64KM / H
0CAP: 80120
Coolant Tempdevice_thermostat
88.4°C
Nominal Thermal RangeCOLD88.4°CHOT
Engine Oiloil_barrel
4.2BAR
Crankcase PressureMin 1.2 BAROPTIMAL
Electrical CANbattery_charging_full
28.4V DC
Dual 24V Heavy Bankbolt
Load: 48AALT CHARGING
ECU Fault Code Index
All Severities
| ECU Code (SPN/FMI) | Fault Title & Protocol | Severity | Affected Vehicle | Service Van | Action |
|---|---|---|---|---|---|
SPN 3216 / FMI 03Aftertreatment SCR Unit | NOx Sensor Circuit High VoltageReplace SCR tailpipe probe. 20% derate in 65 KM. | CRITICAL | UP-65-BT-9142KM 680 (Varanasi Toll) | Dispatched | |
SPN 929 / FMI 01TPMS & Chassis Controller | Axle 2 Tire Pressure DegradationInspect outer dual tire valve and thermal wrap. | WARNING | HR-55-AN-4412KM 642 (Mathura Exit) | Standby | |
SPN 0100 / FMI 00Engine ECU J1939 | Engine Oil Pressure Self-CalibrationRoutine CAN bus check complete. All sensors nominal. | HEALTHY | WB-19-K-4402KM 480 (Kanpur Park) | Standby |