The reference covers 41 codes from the factory tables of Isuzu — the full list by system is below, stop-now codes first.
A code has two halves. SPN is what is actually at fault — the sensor, component, or parameter. FMI is what is wrong with it — value out of range, open circuit, short circuit, invalid data. So “SPN 100” alone is not a diagnosis yet, but “100/1” already tells you oil pressure has dropped below normal.
That is almost always how it goes: one fault drags five or six codes behind it. An empty AdBlue tank first throws a level error, then interrupted dosing, then a NOx excess and a torque derate. Fix the root cause and the rest clear on their own. Paste the whole list — we will show which code is the root cause.
| C0201 | Front left wheel speed sensor: incorrect air gap. Blink code: 2-1 |
| C0253 | Rear left wheel speed sensor circuit open or shorted. Blink code: 53 |
| C0503 | Rear right wheel speed sensor: tone ring fault. Blink code: 5-3 |
| C1003 | Rear left modulator: exhaust solenoid circuit open. Blink code: 10-3 |
| C1507 | ECU internal error. Blink code: 15-7 |
| P0027 | Exhaust brake valve stuck |
| P0113 | Intake air temperature sensor circuit — signal high |
| P0217 | Excessive coolant temperature |
| P0336 | Crankshaft position sensor circuit — invalid signal |
| P0428 | Exhaust gas temperature sensor circuit #1 — signal high |
| P0563 | On-board voltage too high |
| P0653 | Analog sensor supply 2 voltage high |
| P1293 | Capacitor charge-up abnormal, flag 1 |
| P2128 | Accelerator pedal position sensor No.2 — signal high |
| P2455 | Differential pressure sensor circuit — signal high |
Know the code number? Type it into the search — or paste the whole list from the scanner and we will show which fault is the real one.