Volvo All Engines (2013 Emissions) Fault Code: U30004B PID: EMS Electronic Control Unit Circuit descriptionThis diagnostic trouble code (DTC) is used to indicate temperatures at the engine control module (ECM). The DTC will be set if the ECM temperature is too high. A faulty ECM temperature can lead to power loss. Conditions for diagnostic trouble code (DTC)The engine control module (ECM) is overheated Observable symptomsTemperature above normal: Yellow lamp lights upTemperature critically above range: Red lamp lights up Probable cause1) Common rail safety valve: The safety valve is open2) Thermostatic valve: Stuck in one position3) Driving in Limp-home mode for...

Volvo All Engines (2013 Emissions) Fault Code: U300257 PID: EMS Vehicle Identification Number The Idle Validation Switch is open at the idle position and transmits no voltage to the (VECU) Vehicle Electronic Control Unit. At approximately 1-13% pedal position the Idle Validation Switch closes and completes the circuit to the (VECU) Vehicle Electronic Control Unit.The (VECU) Vehicle Electronic Control Unit then sends a voltage signal to the Engine Control Module (ECM) indicating accelerator pedal position. If both communication links (J1939, J1587) are faulty the pedal demand functionality enters limp-home. During limp-home the (IVS) Idle Validation Switch is used for ramping...

Volvo All Engines (2013 Emissions) Fault Code: U300A11 PID: ACM Key Position Circuit descriptionWhen the ignition key is switched to the RUN position, battery voltage is supplied though fuse 64 to the aftertreatment control module (ACM). Conditions for diagnostic trouble code (DTC)Ignition switch voltage shorted low Probable cause1) Chassis Harness2) Cab harness3) Fuse: F69 Volvo All Engines (2013 Emissions) Fault Code: U300049 PID: ACM Electronic Control Unit Volvo All Engines (2013 Emissions) Fault Code: U02A200 PID: ACM Lost Communication With Reductant Quality Module Volvo All Engines (2013 Emissions) Fault Code: P26E712 PID: ACM Actuator Supply Voltage “D” Circuit High Volvo...

Volvo All Engines (2013 Emissions) Fault Code: U300A12 PID: ACM Key Position Circuit descriptionWhen the ignition key is switched to the RUN position, battery voltage is supplied though fuse 64 to the aftertreatment control module (ACM). Conditions for diagnostic trouble code (DTC)Ignition switch voltage shorted high Probable cause1) Chassis Harness2) Cab harness Volvo All Engines (2013 Emissions) Fault Code: U300A11 PID: ACM Key Position Volvo All Engines (2013 Emissions) Fault Code: U300049 PID: ACM Electronic Control Unit Volvo All Engines (2013 Emissions) Fault Code: U02A200 PID: ACM Lost Communication With Reductant Quality Module Volvo All Engines (2013 Emissions) Fault Code:...

Volvo All Engines (2013 Emissions) Fault Code: U301700 PID: EMS Control Module Timer/Clock Performance The instrument cluster module is linked to the Engine Control Module (ECM) via these data link wires. The function is used to calculate functions related to time limits. Conditions for diagnostic trouble code (DTC):1) Time data failure Probable cause1) Instrument cluster Volvo All Engines (2013 Emissions) Fault Code: U300257 PID: EMS Vehicle Identification Number Volvo All Engines (2013 Emissions) Fault Code: U300049 PID: EMS Electronic Control Unit Volvo All Engines (2013 Emissions) Fault Code: U300046 PID: EMS Electronic Control Unit Volvo All Engines (2013 Emissions) Fault...