TROUBLESHOOTING
Troubleshooting by DTC Fault Codes
13-52 6LY3 Service Manual
© 2007 Yanmar Marine International
P0234/0 (Over Boost)
DTC Fault Code
Fault
Troubleshooting Procedure
1. Check the wastegate.
2. Replace the boost pressure sensor.
DTC P0234/0 Over Boost
DTC / FMI 1. Condition, 2. Fault, 3. Time to Detect, 4. Display Check Point
P0234/0
1. Key switch ON
2. Boost pressure is above 250 kPa (36 psi)
3. 0.5 seconds
4. PWR REDUCTION, the TURBO BOOST on the TELEFLEX display
Turbocharger
boost pressure sensor
Fail Mode Turbocharger over boost condition.
Limited Operation Maximum engine speed is limited to 1800 rpm.
Fail Release
Yes
When boost pressure is below 200 kPa (29 psi)
Limited Operation Release
Yes
After failure is cleared and also when throttle position is at low idle position
Remarks —
DTC / FMI Probable Cause
P0234/0
1. Turbocharger / wastegate
2. Boost pressure sensor
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