P3867 = Heater element NOx sensor before catalyst performance - Malfunction P2542 = Fuel pressure - Voltage too high or short circuit to supply on ECU (D420) pin (A50) U177C = Accelerator pedal 1 - Voltage too low or short circuit to ground on ECU (D420) pin (B41) P1217 = Injector solenoid valve cylinder 2 - Current too low or open circuit on ECU (D420) pin (A9) and/or pin (A10) P0640 = Grid heater relay - Voltage too high or short circuit to supply P1718 = EGR mass flow - Data valid but too high P3817 = Exhaust gas temperature after SCR catalyst - Data valid but too high, most severe Mostly when i pull to slow or idle at stoplight .now pulling the hills , the check engine light also comes on . From Peterbilt, models involved are 330/2008-2019, 335/2008-2011, 337/2008-2019, 340/2008-2011, 348/2008-2019, 365/2008-2019, 367/2008-2019, 384/2008-2019, 386/2008-2019, 387/2008-2016, 388/2008-2019, 389/2008-2019, 567/2008-2019, 579/2008-2019 and 587/2008-2019. P1403 = Crankcase air pressure - Data erratic, intermittent or incorrect at ignition on P1021 = BPV actuator - CAN communication error P156B = Coolant pump clutch 2 - Short circuit to ground P3883 = EAS-3 ECU - Voltage too low or short circuit to ground on ECU (D374) pin (A32) P3967 = NH3 sensor - Internal error U1114 = CAN communication - Message (AT1T1I) rate too low, DEF tank information from aftertreatment system P2558 = Coolant level 1 - Voltage too low or short circuit to ground on ECU (D420) pin (C7) U1409 = VTG turbo charger actuator state - Data erratic, intermittent or incorrect P1026 = BPV actuator - Out of calibration P3850 = Pump module temperature - Malfunction on sensor P1158 = Wheel speed, front axle, left - Data erratic, intermittent or incorrect U1831 = CAN communication - Message (PROPB_VIC) not available, primary retarder by foot on from vehicle control system P1234 = Common rail pump unit 2 - Short circuit between ECU (D420) pin (A27) and pin (A28) P3821 = NH3 sensor - Degraded P1030 = EGR temperature - Data erratic, intermittent, or incorrect at ignition on Shifting Simplified . P1042 = VTG turbocharger control - Incorrect P1572 = Inlet air temperature after compressor - Data erratic, intermittent, or incorrect U1164 = CAN communication - Message (A1SCRAI2) out of range, SCR intermediate NH3 reading stable from aftertreatment system P3935 = DEF quality sensor concentration - Voltage too low or short circuit to ground P3887 = EAS-3 ECU power supply DOC/DPF pressure sensor - Voltage too low or short circuit to ground on ECU (D374) pin (B42) P0073 = Ambient temperature - Voltage too high or short circuit to supply on ECU (D420) pin (C78) while driving, do the following: 7. U1879 = CAN communication - Message (A1SCREGT) out of range, Exhaust gas temperature before SCR catalyst from aftertreatment system P3793 = Exhaust gas temperature after DPF - Data valid but too high, moderately severe P3796 = Diesel Particulate Filter (DPF) - Soot level, most severe P2266 = Water in fuel - Voltage too low or short circuit to ground on ECU (D420) pin (A49) P3448 = Engine brake solenoid valve cylinder 6 - Voltage too high or short circuit to supply on ECU (D420) pin (A20) P0183 = Fuel temperature - Voltage too high or short circuit to supply on ECU (D420) pin (A42) P3831 = Fuel shutoff valve - Voltage too low or short circuit to ground on ECU (D374) pin (B07) U17E4 = Remote pedal - Voltage too high or short circuit to supply P3912 = Pump module - Unable to prime By creating an account, you agree to theTerms of Service and acknowledge our Privacy Policy. U1544 = CAN communication - Message (ERC1_DR) out of range, retarder torque actual percent from retarder system Fits - Kenworth T660 / T680 / T880, Peterbilt 579 & others. P3971 = NOx sensor after catalyst O2 concentration too high P3813 = Exhaust gas temperature after SCR catalyst - Voltage too low or short circuit to ground P102A = Temperature after BPV - Voltage too high or short circuit to supply on ECU (D420) pin (C11) U1572 = EGR valve module state - Data erratic, intermittent, or incorrect P2459 = CAN communication - Message (CM1) out of range, DPF regeneration switch from vehicle control system The PACCAR MX Engine boasts a B10 design life of one million miles in linehaul applications. P3782 = Exhaust gas temperature before DPF - Data valid but too high, moderately severe P0699 = PCI ECU 5V sensor supply - Voltage too high or short circuit to supply P0219 = Engine speed - Data valid but too high P3928 = NOx sensor after catalyst - Data not rational, drifted high P1497 = EGR valve position - Incorrect P1560 = Coolant level - Data valid but too low, moderately severe P1122 = Cruise control brake signal - Data erratic, intermittent, or incorrect P3948 = Exhaust gas temperature sensors SCR - Data valid but too high U1105 = CAN communication - Message (PROBA_BBM_to_Eng) out of range, engine stop from Body Builder Module P3913 = NOx sensor after catalyst - Data not rational, drifted low U1159 = VTG turbo charger actuator - CAN communication error, message rate too low Designed as a direct replacement (fits factory plug harness) for several PACCAR® model trucks. P228C = Engine rail pressure control - Incorrect P1216 = Injector solenoid valve cylinder 6 - Voltage too high or short circuit to supply on ECU (D420) pin (A8) P3973 = NOx sensor after catalyst - O2 reacting too slow P250F = Engine oil level - Data valid but too low, most severe The PR engine complies with Euro 5 emission standards thanks to the SMART injection system and DAF SCR technology. The trucks recalled in 2018 will need to be reprogrammed again because PACCAR indicated in the recall submitted April 6 that 100% of the recalled trucks have the issue. For more interesting facts and repair tips, visit out blog here. P1524 = Engine oil pressure - Data valid but too low, moderately severe U1579 = BPV actuator position - Data erratic, intermittent, or incorrect U17B3 = Water in fuel drain control - Short circuit to supply on ECU (D420) pin (A37) P1408 = Crankcase air pressure - Data valid but too high, Moderately severe P0528 = Electronically controlled fan - Voltage too low or short circuit to ground on ECU (D420) pin (C8) U1891 = CAN communication - Message (EBC1) data not correct or available, Anti-lock Braking (ABS) active from brake system. This warning re-quirement is mandated by California law (Proposition 65) and does not re-sult from any change in the manner in which vehicles are manufactured. P0408 = EGR pressure difference - Voltage too high or short circuit to supply on ECU (D420) pin (C80) P1867 = Temperature after BPV - Data valid but too high P0195 = Engine oil temperature - Data erratic, intermittent, or incorrect at ignition key on U181C = CAN communication - Message (ETC1) out of range, progressive shift disable from transmission system Part# 1780809PE OLD# -Paccar Engine… P1866 = Exhaust gas pressure before turbine - Data valid but too high P1225 = Injector solenoid valve cylinder 1, 2, or 3 - Voltage too low or short circuit to ground on ECU (D420) pin (A2) or pin (A10) or pin (A6) U1408 = VTG turbocharger actuator status - Data erratic, intermittent, or incorrect P1644 = PCI ECU 5V sensor supply - Voltage too high or short circuit to supply U1049 = VTG turbo charger actuator, position Incorrect P3881 = NOx sensor before catalyst power supply - Incorrect P250B = Engine oil level - Data erratic, intermittent or incorrect at ignition on U1878 = CAN communication - Message (VEP4) out of range, Power Electronics Carrier remaining charge from vehicle control system P3820 = Pump module - Dosing system degradation malfunction P3947 = Exhaust gas temperature sensors SCR - Voltage too low or short circuit to ground P1482 = EGR valve module - Internal error Amber/Clear color, trapezoid shaped cab marker light. P0263 = Cylinder 1 - Torque contribution too low This light appears when there is a trouble code stored in your engine control unit. P2183 = Engine coolant temperature - Data erratic, intermittent, or incorrect U1137 = CAN communication - Message (A1SCRDSI2) out of range, DEF pipe heater 4 state from aftertreatment system ... Our PACCAR MX Engines unite high performance with light-weight designs, giving you a reliable B10 design life of one million miles. Depending on the configuration of the truck, an unrelated warning lamp, such as Traction Control or Check Engine, may illuminate, PACCAR said. P1489 = EGR valve - Stuck closed PART # K256-790. P3986 = Pump module power supply - Voltage too low on ECU (D374) pin (B46) P3966 = DEF quality sensor - Temperature error U182E = CAN communication - Message (PROPB_VIC) not available, primary retarder by stalk on from vehicle control system P0691 = Electronically controlled fan - Voltage too low or short circuit to ground on ECU (D420) pin (C74) P3952 = Heater element NH3 sensor - Malfunction U17A1 = Accelerator pedal 2 - Voltage too high or short circuit to supply on ECU (D420) pin (B45) Slow down carefully. U178D = CAN communication - Message (PROBA_BBM_to_Eng) out of range, ESC n variable from Body Builder Module The easiest way to reset the check engine light and clear any codes is to use a scan tool, which plugs into the ODB2 DLC (On-Board Diagnostics Generation Two Data Link Connector) port, usually somewhere on the driver’s side.Check your owner’s manual for the location. 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