- 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
- JPRO 2022 v3 ( 1 PC )
JPRO$94.00
Rated 0 out of 5
- CAT CDVR PC Software – Caterpillar Digital Voltage Regulator (CDVR) WINDOWS 10
CAT$45.00
Rated 0 out of 5
- Bobcat Software Service Analyzer Version 87.07 ( 1PC )
Bobcat$90.00
Rated 0 out of 5
John Deere$200.00
Rated 0 out of 5
- Meritor Wabco Tool Box 12.9.1
Trucks software$35.00
Rated 0 out of 5
Related products
- 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:3231 PID: SPN:4360 FMI:0 Aftertreatment SCR 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: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:3254 PID: SPN:3242 FMI:0 Aftertreatment Diesel Particulate Filter Intake 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:325 PID:SID 6 SPN:656 FMI:5 Injector Solenoid Driver Cylinder 6 Circuit – Current Below Normal or Open Circuit
DTC TRUCKS
Rated 0 out of 5
- PACCAR PX-9 CM2350 (2013-17) Fault Code:3261 PID:SID 254 SPN:4342 FMI:5 Aftertreatment 1 Diesel Exhaust Fluid Line Heater 2 Circuit – Current Below Normal or Open Circuit
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: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:3232 PID: SPN:3216 FMI:9 Aftertreatment 1 Intake NOx Sensor – Abnormal Update Rate
DTC TRUCKS
Rated 0 out of 5
- PACCAR PX-9 CM2350 (2013-17) Fault Code:3253 PID: SPN:3242 FMI:0 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:3318 PID: SPN:3242 FMI:2 Aftertreatment 1 Diesel Particulate Filter Intake Temperature – Data Erratic, Intermittent, or Incorrect
DTC TRUCKS
Rated 0 out of 5
- PACCAR PX-9 CM2350 (2013-17) Fault Code:3235 PID: SPN:4363 FMI:0 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:3258 PID: SPN:4340 FMI:5 Aftertreatment 1 Diesel Exhaust Fluid Line Heater 1 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:3316 PID: SPN:3242 FMI:4 Aftertreatment 1 Diesel Particulate Filter Intake Temperature Sensor Circuit – Voltage Below Normal or Shorted to Low Source
DTC TRUCKS
Rated 0 out of 5
INTERNATIONAL ENGINES$27.00
Rated 0 out of 5
- SERVICE MANUAL BOBCAT 324 sms
BOBCAT$54.00
Rated 0 out of 5
- SERVICE MANUAL MACK E-TECH
MACK$28.00
Rated 0 out of 5
- SERVICE MANUAL BOBCAT 853 sms
BOBCAT$40.00
Rated 0 out of 5
FUSO$27.00
Rated 0 out of 5
- SERVICE MANUAL BOBCAT 310 – 313 SMS
BOBCAT$45.00
Rated 0 out of 5
- MANUAL SERVICE DEUTZ AGROPLUS 75-85-95-100
DEUTZ$23.00
Rated 0 out of 5
- SERVICE MANUAL BOBCAT 225 SMS
BOBCAT$60.00
Rated 0 out of 5
- SERVICE MANUAL BOBCAT 553 sms
BOBCAT$60.00
Rated 0 out of 5
FUSO$25.00
Rated 0 out of 5