- whatsapp +51955515985
- support@ecuforcetruck.com
- 24/7 Customer Support
Menu
Shop
Account
Subtotal: $0.00
No products in the cart.
PACCAR MX (2004 Emissions) Fault Code: P171B EGR Flow Response – Decrease too Slow
SET CONDITIONS:
The PCI ECU (D420) detects that the EGR mass flow decrease is too slow during changes in the commanded EGR mass flow from a high to low rate.
DIAGNOSTIC CONDITION:
This diagnostic runs:
1. When the engine speed is more than 1000 rpm and
2. The engine mode is DPF regeneration or SCR heating or SCR high efficiency or standard.
CORRESPONDING OBD READINESS MONITOR:
EGR system monitor
RESET CONDITION:
This DTC changes to inactive when the fault is no longer detected.
REPAIR VERIFICATION:
1. Clear all DTCs.
2. Test drive or operate the vehicle to meet the following conditions:
– Corresponding readiness monitor displays ‘Ready’
– Diagnostic conditions are met
– set conditions are met
3. Did the DTC come back? (Can be pending, inactive or active)
– No, repair successful
– Yes, repair unsuccessful
POSSIBLE CAUSES:
1. Clogged EGR system
2. Clogged EGR pressure difference sensor venturi
3. Sticking EGR valve
ADDITIONAL INFORMATION:
1. The engine NOx emission is, among others, controlled by varying the EGR flow toward the inlet manifold of the engine.
2. For this diagnostic, the EGR pressure difference sensor (F751) is used to measure the EGR mass flow during changes in the commanded EGR mass flow from a higher to lower flow rate.
Related
Categories MX (2004 Emissions), PACCARTags 2004, Code, Decrease, EGR, Emissions, Fault, Flow, MX, P171B, PACCAR, Response, Slow, too
Wiring Diagrams
Component Locators
- Perkins EST 2016C Electronic Service Tool
Perkins$50.00
Rated 0 out of 5
- Perkins SPI2 2018A Dealer Parts and Service
Perkins$50.00
Rated 0 out of 5
- Freightliner ServiceLink 4.9.6
Freightliner$30.00
Rated 0 out of 5
NISSAN UD$100.00
Rated 0 out of 5
- DOWNLOAD CNH EST 9.8 ENGINEERING
CNH$115.00
Rated 0 out of 5
Related products
- PACCAR PX-9 CM2350 (2013-17) Fault Code:3253 PID: SPN:3242 FMI:16 Aftertreatment Diesel Particulate Filter Intake Temperature – Data Valid But Above Normal Operating Range – Moderately Severe Level
DTC TRUCKS
Rated 0 out of 5
- PACCAR PX-9 CM2350 (2013-17) Fault Code:332 PID:SID 4 SPN:654 FMI:5 Injector Solenoid Driver Cylinder 4 Circuit – Current Below Normal or Open Circuit
DTC TRUCKS
Rated 0 out of 5
- PACCAR PX-9 CM2350 (2013-17) Fault Code:3239 PID: SPN:4342 FMI:3 Aftertreatment 1 Diesel Exhaust Fluid Line Heater 2 Circuit – Voltage Above Normal or Shorted to High Source
DTC TRUCKS
Rated 0 out of 5
- PACCAR PX-9 CM2350 (2013-17) Fault Code:3251 PID:S326 SPN:4765 FMI:16 Aftertreatment Diesel Oxidation Catalyst Intake Temperature – Data Valid But Above Normal Operating Range – Moderately Severe Level
DTC TRUCKS
Rated 0 out of 5
- PACCAR PX-9 CM2350 (2013-17) Fault Code:3256 PID: SPN:3246 FMI:15 Aftertreatment Diesel Particulate Filter Outlet Temperature – Data Valid But Above Normal Operating Range – Least Severe Level
DTC TRUCKS
Rated 0 out of 5
- PACCAR PX-9 CM2350 (2013-17) Fault Code:3237 PID:SID 254 SPN:4340 FMI:3 Aftertreatment 1 Diesel Exhaust Fluid Line Heater 1 Circuit – Voltage Above Normal or Shorted to High Source
DTC TRUCKS
Rated 0 out of 5
- PACCAR PX-9 CM2350 (2013-17) Fault Code:3256 PID: SPN:3246 FMI:0 Aftertreatment Diesel Particulate Filter Outlet Temperature – Data Valid But Above Normal Operating Range – Least Severe Level
DTC TRUCKS
Rated 0 out of 5
- PACCAR PX-9 CM2350 (2013-17) Fault Code:3235 PID: SPN:4363 FMI:16 Aftertreatment SCR Outlet Temperature – Data Valid But Above Normal Operating Range – Moderately Severe Level
DTC TRUCKS
Rated 0 out of 5
- PACCAR PX-9 CM2350 (2013-17) Fault Code:3313 PID: SPN:4765 FMI:4 Aftertreatment 1 Diesel Oxidation Catalyst Intake Temperature Sensor Circuit – Voltage Below Normal or Shorted to Low Source
DTC TRUCKS
Rated 0 out of 5
- PACCAR PX-9 CM2350 (2013-17) Fault Code:3251 PID:S326 SPN:4765 FMI:0 Aftertreatment Diesel Oxidation Catalyst Intake Temperature – Data Valid But Above Normal Operating Range – Moderately Severe Level
DTC TRUCKS
Rated 0 out of 5
- PACCAR PX-9 CM2350 (2013-17) Fault Code:3245 PID: SPN:3936 FMI:7 Aftertreatment 1 Diesel Particulate Filter System – Mechanical System Not Responding or Out of Adjustment
DTC TRUCKS
Rated 0 out of 5
- PACCAR PX-9 CM2350 (2013-17) Fault Code:3311 PID: SPN:3242 FMI:0 Aftertreatment 1 Diesel Particulate Filter Intake Temperature – Data Valid But Above Normal Operating Range – Most Severe Level
DTC TRUCKS
Rated 0 out of 5
- PACCAR PX-9 CM2350 (2013-17) Fault Code:3241 PID: SPN:4342 FMI:4 Aftertreatment 1 Diesel Exhaust Fluid Line Heater 2 Circuit – Voltage Below Normal or Shorted to Low Source
DTC TRUCKS
Rated 0 out of 5
- PACCAR PX-9 CM2350 (2013-17) Fault Code:3319 PID: SPN:3246 FMI:3 Aftertreatment 1 Diesel Particulate Filter Outlet Temperature Sensor Circuit – Voltage Above Normal or Shorted to High Source
DTC TRUCKS
Rated 0 out of 5
- PACCAR PX-9 CM2350 (2013-17) Fault Code:3634 PID: SPN:5484 FMI:4 Engine Fan Clutch 2 Control Circuit – Voltage Below Normal or Shorted to Low Source
DTC TRUCKS
Rated 0 out of 5
- SERVICE MANUAL VOLVO D13 (2009)
TRUCK MANUALS$25.00
Rated 0 out of 5
- SERVICE MANUAL BOBCAT 329 sms
BOBCAT$55.00
Rated 0 out of 5
- SERVICE MANUAL BOBCAT 863 sms
BOBCAT$62.00
Rated 0 out of 5
- SERVICE MANUAL BOBCAT 2100 sms
BOBCAT$35.00
Rated 0 out of 5
INTERNATIONAL ENGINES$31.00
Rated 0 out of 5
- SERVICE MANUAL Input and Output Configurations Allison Transmission
Allison$21.00
Rated 0 out of 5
- SERVICE MANUAL BOBCAT 773 sms
BOBCAT$45.00
Rated 0 out of 5
- SERVICE MANUAL BOBCAT 116 sms
BOBCAT$54.00
Rated 0 out of 5
- SERVICE MANUAL HINO FD.FE.FF.SG 2001
HINO$35.00
Rated 0 out of 5
- SERVICE MANUAL International Engines N13
INTERNATIONAL ENGINES$25.00
Rated 0 out of 5
