Volvo aftertreatment hydrocarbon air purge valve. System Overview The Aftertreatment Hydrocarbon Injector (AHI) System is a component of the Emissions Aftertreatment System (EATS) that monitors and controls fuel injection into the Diesel Oxidation Catalyst (DOC) to regenerate the Diesel Particulate Filter (DPF). I have also installed a new regulator, a new AHI module, and a new seventh injector. Aug 10, 2025 · The exhaust aftertreatment fuel air purge valve is located on the Volvo D13 engine. Feb 18, 2025 · One of the most common causes of DTC P24F700 is a stuck-closed exhaust aftertreatment fuel air purge valve. The system is made up of 3 primary components: The AHI Module, Fuel and Air Lines, and the AHI Nozzle Feb 16, 2026 · OEM GENUINE VOLVO/ MACK AIR PURGE VALVE AHI MODULE VOLVO D13 23185531. If it’s for the after treatment fuel doser it’s mounted on the driver side behind the fuel filters it has the fuel line to the doser a 1/4 inch air line, and two harness connectors. The system is made up of 3 primary components: The AHI Module, Fuel and Air Lines, and the AHI Nozzle The Aftertreatment Hydrocarbon Injector (AHI) System is a component of the Emissions Aftertreatment System that monitors and controls fuel injection into the Diesel Oxidation Catalyst (DOC) to regenerate the Diesel Particulate Filter (DPF). During Air Purge operation the Engine Control Module (ECM) sends a voltage signal to activate the Aftertreatment Purge Air Valve open. . The system is made up of 3 primary components: The AHI Module, Fuel and Air Lines, and the AHI Nozzle Aftertreatment Hydrocarbon Dosing: Activates doser to check spray pattern and fuel volume. A stuck hydrocarbon aftertreatment purge valve on the D13 engine can cause low air supply errors. AHI module and also regulator for air supply, and also air dryer filter. The system is made up of 3 primary components: The AHI Module, Fuel and Air Lines, and the AHI Nozzle Nov 19, 2018 · proably hydrocarbon purge valve module. Hydrocarbon Doser Functionality Test: Validates AFT system component operation. The system is made up of 3 primary components: The AHI Module, Fuel and Air Lines, and the AHI Nozzle During Air Purge operation the Engine Control Module (ECM) sends a voltage signal to activate the Aftertreatment Purge Air Valve open. This allows air pressure to flow into the Aftertreament Hydrocarbon Dosing Module. The Aftertreatment Hydrocarbon Injector (AHI) System is a component of the Emissions Aftertreatment System that monitors and controls fuel injection into the Diesel Oxidation Catalyst (DOC) to regenerate the Diesel Particulate Filter (DPF). Do you know whey could cause this? ECM SPN 3492, Aftertreatment 1 Air System Relay Short circuit to battery voltage, Control wire Aftertreatment Hydrocarbon Dosing Module Cheetahrepairservices, Jan 21, 2020 #3 Jul 3, 2023 #4 During Air Purge operation the Engine Control Module (ECM) sends a voltage signal to activate the Aftertreatment Purge Air Valve open. Inspect the purge valve actuator and air supply lines for blockages or damage. This valve is responsible for purging excess fuel from the aftertreatment system during the regeneration process. System Overview The Aftertreatment Hydrocarbon Injector (AHI) System is a component of the Emissions Aftertreatment System (EATS) that monitors and controls fuel injection into the Diesel Oxidation Catalyst (DOC) to regenerate the Diesel Particulate Filter (DPF). The Aftertreatment Hydrocarbon Injector (AHI) System is a component of the Emissions Aftertreatment System (EATS) that monitors and controls fuel injection into the Diesel Oxidation Catalyst (DOC) to regenerate the Diesel Particulate Filter (DPF). Exhaust AFT System Active Diagnostic Test: Monitors aftertreatment fuel pressure and valve sequencing. It’s a Volvo D13 from 2014. Function Group Function Group 254 catalytic converter; exhaust emission control equipment , 258 emissions after-treatment Customer: Hi, the air purge valve is stuck open even after I installed a new AHI module, and it’s still stuck open. The system is made up of 3 primary components: The AHI Module, Fuel and Air Lines, and the AHI Nozzle (7 Injector). The part is called a hydrocarbon dosing module I believe, the air purge valve is internal the module would have to be replaced. The aftertreatment fuel pressure during regeneration is above 200 kPa. This valve is responsible for purging the air from the exhaust system and preventing contamination of the catalytic converter. xdbn hdxqiux qgfhi xuqbnjrm uexoe hmgq qwvpwihne grr mzjf ilr