Yanmar 4BY2 - Page 74

Code Part or System Mode Run Or
Condition
Engine
Can
Start
Check
Engine
Alarm
P0675 Glow System - Glow
Spark No. 5
Not connected, short circuit yes yes alarm
P0676 Glow System - Glow
Spark No. 6
Not connected, short circuit yes yes alarm
P0689 Main Relay Power relay sense short circuit
low
no no alarm
P0690 Main Relay Power relay sense short circuit
high
no no alarm
P2049 4BY2 - Injector Bank 1 Short circuit on high side to
Ground / B+
no no alarm
6BY2 - Injector Bank 1 Short circuit on high side to
Ground / B+
reduce no
P2052 4BY2 - Injector Bank 2 Short circuit on high side to
Ground / B+
reduce yes alarm
6BY2 - Injector Bank 2 Short circuit on high side to
Ground / B+
reduce yes
P2227 Atmospheric Pres-
sure
Plausibility check with BPS
(boost pressure sensor) fail
yes yes alarm
P2228 Atmospheric Pres-
sure
Short circuit low yes yes alarm
P2229 Atmospheric Pres-
sure
Short circuit high yes yes alarm
P2614 Camshaft Speed
Sensor
No connection / short circuit reduce yes alarm
P2617 Crankshaft Speed
Sensor
No connection / short circuit no no alarm
U0001 CAN Throttle Signal No signal idle yes alarm
U0106 Glow Control Unit No communication error yes yes alarm
U0426 Immobilizer Manipulation error no no alarm
* Relative value is the value read on a pressure gauge attached to the intake pipe.
** Absolute is the value reported by the ECU and displayed at the helm digital display.
TROUBLESHOOTING
68 BY Series Operation Manual
© 2008 Yanmar Marine International