Maintenance manual for sunray hfc4da1-2c china-IV diesel engines
121
S/N DTC Meaning
448 P1623 The drive circuit for fuel consumption display is open.
449 P1624 Overtemperature of the drive circuit for fuel consumption display
450 P1625 TTLAMP drive circuit is short to power supply.
451 P1626 TTLAMP drive circuit is short to ground.
452 P1627 Overheating of TTLAMP drive circuit
453 P1633 The signal level of ECU temperature sensor is relatively high.
454 P1634 The signal level of ECU temperature sensor is relatively high.
455 P1635 The signal level of ECU temperature sensor is relatively low.
456 P1636 The signal level of ECU temperature sensor is relatively low.
457 P1637 The power supply voltage is too high.
458 P1638 The power supply voltage is too low.
459 P1639 The physical value of ECU temperature sensor exceeds the upper limit.
460 P163A The physical value of ECU temperature sensor falls below the lower limit.
461 P163B ECU temperature sensor SPI fault (LM71)
462 P1640 Compressor overtemperature in electrifying phase
463 P1643 Signal safety checkout error
464 P1645 The injection frequency is limited by the boosting electric quantity charging balance.
465 P1646
The injection frequency is limited by the high pressure fuel pump fuel quantity
balance.
466 P1647 The injection frequency is limited by the runtime.
467 P164C EGR valve circuit is open.
468 P164D EGR valve circuit is short to power supply.
469 P164E EGR valve circuit is short to ground.
470 P1650 EEP Clear Error
471 P1651 EEP Clear Error
472 P1652 An error is reported when the module’s data-writing is disabled for three times.
473 P165A Null dataset identifier
474 P165B Dataset switchover fault
475 P165C EEPROM data-reading error
476 P1660 ADC open circuit pulse test fault
477 P1662 The voltage being transformed by ADC module exceeds the set range of test voltage.
478 P1663 The radiometry correction exceeds the set range.
479 P1664 Monitoring control communication fault
480 P1665 SPI Monitoring control communication fault
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