5.9L Cummins Common Rail Diagnostics
Dodge Ram 2500/3500, 2003-2007 — the CP3 common-rail 5.9L with solenoid injectors and a fixed-geometry turbo. No DPF. Rail-pressure, injector, FCA and sensor codes.
- P0087 — Fuel Rail/System Pressure Too Low (5.9 Cummins Common Rail) Measured fuel rail pressure is below the PCM's commanded value on the 5.9L Cummins Common Rail 2003-2007 ISB.
- P0088 — Fuel Rail/System Pressure Too High (5.9 Cummins Common Rail) Measured fuel rail pressure exceeds the commanded value on the 5.9L Cummins Common Rail 2003–2007 ISB.
- P0090 — Fuel Pressure Regulator Control Circuit (5.9 Cummins Common Rail) Fuel Pressure Regulator Control Circuit
- P0121 — Throttle/Pedal Position Sensor/Switch A Circuit Range/Performance (5.9 Cummins Common Rail) P0121 on 2003-2007 5.9L Cummins Common Rail means the ECM sees the Accelerator Pedal Position Sensor (APPS) signal outside expected range or inconsistent. APPS…
- P0122 — Throttle/Pedal Position Sensor/Switch A Circuit Low Input (5.9 Cummins Common Rail) Diagnostic reference for 5.9L Cummins Common Rail 2003-2007 Dodge Ram 2500/3500 ISB. ECM detects pedal position sensor A voltage lower than expected range.
- P0128 — Coolant Thermostat Below Regulating Temperature (5.9 Cummins Common Rail) Engine coolant does not reach the expected operating temperature in the expected time.
- P0182 — Fuel Temperature Sensor A Circuit Low (5.9 Cummins Common Rail) Fuel Temperature Sensor A Circuit Low
- P0192 — Fuel Rail Pressure Sensor Circuit Low Input (5.9 Cummins Common Rail) Diagnostic reference for 5.9L Cummins Common Rail 2003–2007 (ISB).
- P0193 — Fuel Rail Pressure Sensor A Circuit High (5.9 Cummins Common Rail) Diagnostic reference for 5.9L Cummins Common Rail 2003-2007 (ISB 5.9 common rail).
- P0201 — Injector Circuit/Open - Cylinder 1 (5.9 Cummins Common Rail) Diagnostic reference for P0201 on 5.9 Cummins Common Rail 2003-2007. Covers meaning, most likely causes, quick checks, and safe diagnostic steps without…
- P0202 — Injector Circuit Malfunction Cylinder 2 (5.9 Cummins Common Rail) P0202 on 5.9 Cummins Common Rail 2003-2007 means the ECM detected an electrical fault in the fuel injector circuit for cylinder 2. Injectors are Bosch…
- P0203 — Injector Circuit / Open (5.9 Cummins Common Rail) P0203 means the ECM detected an electrical fault in the injector circuit for cylinder #3 on a 5.9L Cummins Common Rail 2003-2007 ISB. Injectors are Bosch…
- P0204 — Injector Circuit/Open Cylinder 4 (5.9 Cummins Common Rail) Diagnostic reference for P0204 on 5.9L Cummins Common Rail 2003-2007. Covers what the code means, how to diagnose the electrical fault for cylinder 4 injector…
- P0205 — Injector Circuit / Open (5.9 Cummins Common Rail) The ECM has detected an electrical fault in the injector circuit for cylinder 5 on a 5.9L Cummins Common Rail 2003-2007.
- P0206 — Injector Circuit/Open - Cylinder 6 (5.9 Cummins Common Rail) Diagnostic reference for P0206 on 5.9L Cummins Common Rail 2003-2007. Covers what the code means, how to diagnose the injector circuit/open fault for cylinder…
- P0221 — Throttle/Pedal Position Sensor/Switch B Circuit Range/Performance (5.9 Cummins Common Rail) Throttle/Pedal Position Sensor/Switch B Circuit Range/Performance
- P0234 — Turbocharger/Supercharger Overboost Condition (5.9 Cummins Common Rail) Diagnostic reference for 5.9L Cummins Common Rail 2003-2007 ISB. Code sets when boost pressure exceeds the maximum allowed for current conditions. Platform has…
- P0263 — Cylinder 1 Contribution/Balance Fault (5.9 Cummins Common Rail) Diagnostic reference for 5.9L Cummins Common Rail 2003–2007 ISB.
- P0299 — Turbocharger/Supercharger Underboost Condition (5.9 Cummins Common Rail) Diagnostic reference for 5.9L Cummins Common Rail 2003-2007 Dodge Ram 2500/3500 ISB. Fixed-geometry Holset turbo with wastegate; no VGT. Underboost means…
- P0336 — Crankshaft Position Sensor A Circuit Range/Performance (5.9 Cummins Common Rail) Diagnostic reference for 5.9L Cummins Common Rail (2003-2007) Dodge Ram 2500/3500 ISB.
- P0341 — Camshaft Position Sensor A Circuit Range/Performance (5.9 Cummins Common Rail) P0341 on the 5.9L Cummins Common Rail (2003–2007) means the ECM sees the camshaft position sensor signal outside the expected range or performance. The engine…
- P0380 — Glow Plug/Heater Circuit Malfunction (5.9 Cummins Common Rail) P0380 is a generic OBD-II code for a glow-plug/heater circuit electrical fault detected by the ECM. On the 2003-2007 5.9L Cummins Common Rail this code does…
- P2509 — Fuel Pump Relay Control Circuit Low (5.9 Cummins Common Rail) Diagnostic reference for 5.9L Cummins Common Rail 2003–2007 (ISB 5.9 common rail).