SECTION 2 300HH, 375, 375H, 375HH, 425 AND 425H USER MANUAL R00
51
637 7 45 Engine Position Sensor Signal Rate of Change—
Abnormal
Check Sensor and Wiring
8 41 Engine Timing Sensor Signal Missing Check Sensor Wiring
10 39 Engine Timing Signal Rate of Change—Abnormal Check Sensor and Wiring
639 13 — CAN Bus Error (Communication Network Problem) Contact Servicing Dealer
651 5 31 Injector Number 1 Circuit Has High Resistance Check Injector Wiring or Injector Sole-
noid
6 91 Injector Number 1 Circuit Has Low Resistance Check Injector Wiring or Injector Sole-
noid
7 65 Injector Number 1 Not Responding Injector Failed or Flow Limiter Closed
652 5 29 Injector Number 2 Circuit Has High Resistance Check Injector Wiring or Injector Sole-
noid
6 92 Injector Number 2 Circuit Has Low Resistance Check Injector Wiring or Injector Sole-
noid
7 65 Injector Number 2 Not Responding Injector Failed or Flow Limiter Closed
653 5 17 Injector Number 3 Circuit Has High Resistance Check Injector Wiring or Injector Sole-
noid
6 93 Injector Number 3 Circuit Has Low Resistance Check Injector Wiring or Injector Sole-
noid
7 65 Injector Number 3 Not Responding Injector Failed or Flow Limiter Closed
654 5 34 Injector Number 4 Circuit Has High Resistance Check Injector Wiring or Injector Sole-
noid
6 94 Injector Number 4 Circuit Has Low Resistance Check Injector Wiring or Injector Sole-
noid
7 59 Injector Number 4 Not Responding Injector Failed or Flow Limiter Closed
655 5 35 Injector Number 5 Circuit Has High Resistance Check Injector Wiring or Injector Sole-
noid
6 95 Injector Number 5 Circuit Has Low Resistance Check Injector Wiring or Injector Sole-
noid
7 56 Injector Number 5 Not Responding Injector Failed or Flow Limiter Closed
656 5 35 Injector Number 6 Circuit Has High Resistance Check Injector Wiring or Injector Sole-
noid
6 96 Injector Number 6 Circuit Has Low Resistance Check Injector Wiring or Injector Sole-
noid
7 68 Injector Number 6 Not Responding Injector Failed or Flow limiter Closed
898 9 — Vehicle Speed or Torque Message Unreliable Contact Servicing Dealer
970 31 83 External Shutdown Commanded Not Engine Fault—Check Other Shut-
down Devices—SSAM Module
971 31 84 External Fuel Derate Switch Active Not Engine Fault—Check Other Shut-
down Devices—SSAM Module
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