-19- DTC P Code _ DST-1 display Code explanation Reference 96 P1428 Exhaust pressure sensor mal- function (HI) Cannot detect the exhaust pressure normally. There could be a sensor malfunction or har- ness +B short. 26 P1462 Engine retarder 1 malfunction Engine retarder solenoid valve 1 is abnormal. There could be a solenoid valve malfunction, harness open circuit or ground short. #4 to #6 side retarder 26 P1463 Engine retarder 1 malfunction Engine retarder solenoid valve 1 is abnormal. There could be a solenoid valve malfunction or harness +B short #4 to #6 side retarder 27 P1467 Engine retarder 2 malfunction Engine retarder solenoid valve 2 is abnormal.
There could be a solenoid valve malfunction, harness open circuit or ground short. #1 to #3 side retarder 27 P1468 Engine retarder 2 malfunction Engine retarder solenoid valve 2 is abnormal. There could be a solenoid valve malfunction or harness +B short #1 to #3 side retarder 27 P1472 T/M retarder relay malfunction The T/M retarder relay is abnormal. There could be a relay malfunction, harness open cir- cuit or ground short. T/M retarder relay for interlocked cruise control in large and medium sized vehi- cles 29 P1473 T/M retarder relay malfunction The T/M retarder relay is abnormal. There could be a relay malfunction or harness +B short.
T/M retarder relay for interlocked cruise control in large and medium sized vehi- cles 46 P1530 Engine stop switch closing mal- function The engine stop switch is malfunctioning, or the wiring has shorted. While monitoring the vehicle conditions, check the ON/OFF judg- ment. 43 P1565 Cruise switch malfunction The cruise switch has an ON malfunction. While monitoring the vehicle conditions, check the ON/OFF judgment. 2 P1601 QR code malfunction The QR code is abnormal. Check the QR code. 48 P1676 PCS switch malfunction Cannot detect the PCS switch normally. While monitoring the vehicle conditions, check the ON/OFF judgment.
28 P1681 Exhaust brake solenoid valve malfunction The exhaust brake solenoid valve is abnormal. There could be a solenoid valve malfunction, harness open circuit or ground short. 28 P1682 Exhaust brake solenoid valve malfunction The exhaust brake solenoid valve is abnormal. There could be a solenoid valve malfunction or harness +B short.