OM651 EGR Valve Remove/Install — Model 900 and NCV3 Model 906
Mercedes-Benz Sprinter · Engine 651 (Model 900) · Engines 651.955 / 956 / 957 (NCV3 Model 906)
Workshop-style 34-step remove-and-install procedure for the OM651 exhaust gas recirculation positioner (Y27/15) with bypass flap on Sprinter Model 900 and NCV3 Model 906. Covers coolant drain, EGR cooler and charge-air-distributor removal for access, fuel-hose disconnection at the high-pressure pump, the ZU7/ZU8 USA/Canada shield variant, and all torque specs.
Related Fault Codes
Diagnostic trouble codes this procedure can resolve:
- P0401Exhaust Gas Recirculation (EGR) Flow Insufficient
- P0402Exhaust Gas Recirculation (EGR) Flow Excessive
- P0403Exhaust gas recirculation control circuit malfunction
- P0404Exhaust gas recirculation control range/performance
- P0405Exhaust gas recirculation sensor A circuit low
- P0406Exhaust gas recirculation sensor A circuit high
- P0489Electrical / Power Supply / Sensor Circuit Fault
- P0490Electrical / Power Supply / Sensor Circuit Fault
- P1470Electrical / Power Supply / Sensor Circuit Fault
- P1471Electrical / Power Supply / Sensor Circuit Fault
Known Issues
Documented Sprinter failures related to this repair: