Maintenance manual for sunray hfc4da1-2c china-IV diesel engines
120
S/N DTC Meaning
414 P1521 Under-voltage of turbocharger bridge-H
415 P1522 Overcurrent of turbocharger bridge-H
416 P1523 Overtemperature of turbocharger bridge-H
417 P1524 Overcurrent of turbocharger bridge-H temperature sensor
418 P1525 The valve is stuck in deviation learning process.
419 P1526 Output circuit 1 of turbocharger bridge-H is short to ground.
420 P1527 Output circuit 1 of turbocharger bridge-H is short to ground.
421 P1528 Output circuit 1 of turbocharger bridge-H is short to battery.
422 P1529 Output circuit 2 of turbocharger bridge-H is short to battery.
423 P1601 EGR valve circuit is open.
424 P1602 Too high downstream temperature of coolant temperature sensor is unreliable.
425 P1603 EGR valve circuit is short to power supply.
426 P1604 EGR valve circuit is short to ground.
427 P1608 EGR valve circuit is short to power supply.
428 P1609 EGR valve circuit is short to ground.
429 P160A EGR valve circuit is open.
430 P160B Overtemperature of EGR valve bridge-H chip
431 P160C Overcurrent of turbocharger bridge-H temperature sensor
432 P1610 Execute closing fuel injection under standard ICO mode.
433 P1613 The electrifying time detected by galloping prevention monitor is too long.
434 P1614 Several faults occur during SPI communication.
435 P1615 Time-out when trying to set up or cancel alarm task
436 P1617 Error reported in monitoring under-voltage
437 P1618 WDA works abnormally.
438 P1619 EGR valve circuit is short to power supply.
439 P161A EGR valve circuit is short to ground.
440 P161B EGR valve circuit is open.
441 P161C EGR valve circuit is open.
442 P161D Failure in software reset visibility
443 P161E Failure in software reset visibility
444 P161F Failure in software reset visibility
445 P1620 TTLAMP drive circuit is open.
446 P1621 The drive circuit for fuel consumption display is short to power supply.
447 P1622 The drive circuit for fuel consumption display is short to ground.
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