Maintenance manual for sunray hfc4da1-2c china-IV diesel engines
124
S/N DTC Meaning
546 P2173 False positive deviation of throttle regulator
547 P2175 False negative deviation of throttle regulator
548 P2226 Fault of signal obtained from CAN by air pressure sensor
549 P2228 The signal value of ambient pressure is below the lower limit.
550 P2229 The signal value of ambient pressure is above the upper limit.
551 P2264 EGR valve circuit is open.
552 P2265 An error is reported when the moisture content in fuel is detected.
553 P2266 EGR valve circuit is short to ground.
554 P2267 EGR valve circuit is short to power supply.
555 P2268 EGR valve circuit is open.
556 P2269 The sensor self-checking signal level is above the upper limit.
557 P2290 The rail pressure is below the minimum set value.
558 P242F The particulate filter smoke load exceeds the maximum.
559 P2454 The signal level of particulate filter differential pressure sensor is relatively low.
560 P2455 The signal level of particulate filter differential pressure sensor is relatively high.
561 P2458 Particulate filter regeneration permanent fault
562 P245A EGR cooler bypass valve fault
563 P245B Too low EGR cooling efficiency
564 P245D The signal level of EGR cooler sensor is relatively high.
565 P250F Danger is caused by too low fuel level and air ingress into hydraulic system.
566 P2519 A/C switch CAN input signal error
567 P2522 The compressor torque reduction command circuit in electrifying phase is open.
568 P2562 The turbocharger bridge-H chip circuit is open.
569 P2563 The turbocharger control valve is stuck.
570 P2564 The original voltage of EGR valve sensor signal is below the lower limit.
571 P2565 The original voltage of EGR valve sensor signal is above the upper limit.
572 P2621 The throttle signal level is relatively low.
573 P2622 The throttle signal level is relatively high.
574 P2626 The oxygen sensor pump current terminal IP is in open circuit.
575 B0020 Airbag collision status
576 U0121 ABS ECU main data loss
577 U0400 CAN received frame BCM1 message length error
578 U0415 CAN received frame ABS1 message length error
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