Engine Error Codes

Engine “NO RESTART” Mode

If this message appears, the engine will continue running to allow the machine to move to a safe position where it can be repaired.

After the engine is stopped, it will not restart until the repair is completed and the fault is устранено.

“LOW POWER” Message

If the “LOW POWER” message is displayed, engine power is automatically reduced to 60% to protect the engine from damage.

ISUZU Engine Error Codes (DTC)

• DTC — Diagnostic Monitoring Item (Malfunction Title)
• P0087 — Fuel rail pressure is too low (Fuel leak)
• P0088 — Common rail pressure (1st stage)
• P0088 — Common rail pressure (2nd stage)
• P0089 — Common rail pressure (excessive pressure for pump)
• P0090 — Fuel pressure regulator control circuit
• P0107 — Air pressure sensor (low voltage)
• P0108 — Air pressure sensor (high voltage)
• P0112 — Intake air temperature circuit (low voltage)
• P0113 — Intake air temperature circuit (high voltage)
• P0117 — Engine coolant temperature circuit (low voltage)
• P0118 — Engine coolant temperature circuit (high voltage)
• P0182 — Fuel temperature sensor circuit (low voltage)
• P0183 — Fuel temperature sensor circuit (high voltage)
• P0192 — Fuel rail pressure sensor circuit (low voltage)
• P0193 — Fuel rail pressure sensor circuit (high voltage)
• P0201 — Injector circuit cylinder 1
• P0202 — Injector circuit cylinder 2
• P0203 — Injector circuit cylinder 3
• P0204 — Injector circuit cylinder 4
• P0205 — Injector circuit cylinder 5
• P0206 — Injector circuit cylinder 6
• P0219 — Over run
• P0237 — Boost pressure sensor (low voltage)
• P0238 — Boost pressure sensor (high voltage)
• P0335 — Crank sensor (no signal)
• P0336 — Crank sensor (signal error)
• P0340 — Cam sensor (no signal)
• P0341 — Cam sensor (signal error)
• P0380 — Glow relay
• P0381 — Glow lamp
• P0487 — EGR positioning signal error
• P0488 — EGR valve control failure
• P0522 — Engine oil pressure sensor (low voltage)
• P0523 — Engine oil pressure sensor (high voltage)
• P0601 — ROM error
• P0603 — EEPROM error
• P0606 — CPU failure
• P1093 — Fuel rail pressure low during power enrichment
• P1095 — Pressure limiter open
• P1112 — Boost temperature sensor (low voltage)
• P1113 — Boost temperature sensor (high voltage)
• P1173 — Over heat
• P1261 — Injector circuit group 1
• P1262 — Injector circuit group 2
• P1271 — Accel sensor 1-2 correlation
• P1272 — Accel sensor 2-3 correlation
• P1273 — Accel sensor 1-3 correlation
• P1277 — Accel sensor 1 low input
• P1278 — Accel sensor 1 high input
• P1282 — Accel sensor 2 low input
• P1283 — Accel sensor 2 high input
• P1287 — Accel sensor 3 low input
• P1288 — Accel sensor 3 high input
• P1345 — Cam & Crank phase difference
• P1625 — Main relay circuit
• P1630 — A/D conversion error
• P1631 — 5V reference 1 circuit
• P1632 — 5V reference 2 circuit
• P1633 — 5V reference 3 circuit
• P1634 — 5V reference 4 circuit
• P1635 — 5V reference 5 circuit
• U2104 — CAN Bus off detection
• U2106 — CAN timeout

ISUZU Engines Covered by These Error Codes

• ISUZU 4JJ1 — mini and medium excavators, loaders
• ISUZU 4HK1 — universal engine for construction equipment
• ISUZU 6HK1 — 20–30 ton excavators
• ISUZU 6WG1 — heavy quarry and mining machines
• ISUZU 4BG1 — classic excavators and loaders
• ISUZU 6BG1 — mid-size construction equipment
• ISUZU 4JG1 — compact machinery
• ISUZU 6SD1 — heavy excavators and mining equipment

JCB Excavators with ISUZU Engines

• JCB JS130, JS145, JS160 — ISUZU 4HK1 / 6BG1
• JCB JS200, JS210, JS220 — ISUZU 6BG1 / 6HK1
• JCB JS240, JS260, JS300 — ISUZU 6HK1
• JCB JS330, JS360 — ISUZU 6HK1 / 6WG1
• JCB 3CX, 4CX (selected versions) — ISUZU 4JJ1 / 4JG1

Hitachi Excavators with ISUZU Engines

• Hitachi ZX70, ZX85 — ISUZU 4JG1
• Hitachi ZX120, ZX130, ZX135 — ISUZU 4BG1 / 4HK1
• Hitachi ZX160, ZX170, ZX180 — ISUZU 4HK1
• Hitachi ZX200, ZX210, ZX225 — ISUZU 6BG1 / 6HK1
• Hitachi ZX240, ZX250, ZX270 — ISUZU 6HK1
• Hitachi ZX330, ZX350, ZX370 — ISUZU 6HK1 / 6WG1
• Hitachi ZX450, ZX470 — ISUZU 6WG1

ISUZU Engine Parts and Service for JCB and Hitachi

Aspect Plus supplies genuine and high-quality spare parts for ISUZU engines: injectors, fuel pumps, high-pressure pumps, sensors, EGR valves, turbochargers, glow plugs, pressure regulators, gaskets, repair kits and electronic components.

We help select parts by error code, engine model or machine serial number. Professional support for diagnostics and repair of JCB, Hitachi and other construction equipment.

Aspect Plus — your reliable partner for ISUZU engine parts and service.