Maintenance manual for sunray hfc4da1-2c china-IV diesel engines
122
S/N DTC Meaning
481 P1666 Several faults occur when testing the whole ROM zone.
482 P1667
The number of responsive bytes obtained from CPU in monitoring mode is too small
/ Error of the set response time of monitoring mode
483 P1668 Error of the set response time of monitoring mode
484 P166A OFF-route test time-out
485 P166B The electrifying time for injection is unreliable.
486 P166C The initial electrifying angle (SO E) is unreliable.
487 P166D ZFC is unreliable.
488 P166E Fuel injection monitoring mode 1
489 P166F Fuel injection monitoring mode 2
490 P1670 Error reported in fuel injection correction
491 P1671 Unreliable rail pressure
492 P1672
The torque limit is set once any error is detected before the MoCSOP's error is
generated.
493 P1673 Monitoring OFF-route forward test fault
494 P1674 Monitoring fault mode 3
495 P1675 The negative deviation of throttle controller is below the lower limit for a long time.
496 P1676 Open circuit of EGR valve bridge-H
497 P1677 Overload of EGR valve bridge-H
498 P1678 Overtemperature of EGR valve bridge-H chip
499 P167B CY33X fault
500 P167C
The set value of rail pressure is limited by the torque limit of the function control
unit.
501 P1680 The cruise indicator drive circuit is open.
502 P1681 Overtemperature of cruise indicator drive circuit
503 P1682 The cruise indicator drive circuit is short to power supply or high level.
504 P1683 The cruise indicator drive circuit is short to ground.
505 P1684 The grill heater is always ON.
506 P1685 DFC mechanical fault when turning on ignition switch
507 P1686 Fuel filter heating power level temperature fault
508 P1687 CJ945 Power level no load fault
509 P1688 CJ945 Power level no load fault
510 P1689 Overheating of intake air heater drive circuit
511 P168A CJ945 Overheating fault
512 P168B CJ945 Power level is short to battery.
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