2004 Poalaris MSX110, MSX150 PWC Original Service Manual, Page 166Get this manual
FUEL INJECTIONIGNITIONEXHAUST SYSTEMS TroubleshootingEngine Lacks PerformanceRPM LimitsContinued Indicated Problem
Engine RPM limited to 4700 200 and the CHECK ENGINE MIL LIGHT is on
Suspected Problem
ECU has detected an overboost condition
Solution
Stop engine, pull lanyard and then re-insert lanyardIf problem persists, check air intake system hoses for leaksUse diagnostic software and check for trouble codesCheck all boost control hosesCheck operation of wastegate solenoidCheck wastegate linkage and wastegate operationVerify oil level is not over MAXIMUMClean boost control hose banjo bolt fitting
Engine RPM is limited to 45005500 after initially starting engineEngine RPM is limited to 6000 to 6500