Component pages
Canonical pages for duplicated reports.
Each card groups repeated reports into one reusable data record. Exact fitment should still be confirmed by VIN, installed connector and part photos.
Early HE400VG variable-geometry turbo used on DAF XF/CF MX engines. The repeated reports point to hot-side vane binding, actuator travel errors, oil-coked bearings and underboost complaints.
Common symptoms
- Loss of power uphill or under trailer load
- Limp mode after sustained hot operation
- Turbo whistle, siren noise or squeal above 1500 rpm
Later HE400VG turbo group for DAF XF/CF MX-13 and selected MX-11 Euro 6 applications. Main search intent is OEM replacement matching plus diagnosis of underboost, VGT actuator errors and bearing wear.
Common symptoms
- Loss of boost above 1200 rpm
- Slow boost build after a gear change
- Turbo hunting or surging between 1100 and 1500 rpm
HE500VG turbo group for high-output DAF MX-13 Euro 6 trucks. The reports repeatedly connect these OEM numbers with VGT actuator mismatch, soot-bound vanes, bearing wear and smoke complaints.
Common symptoms
- Significant power loss above 1100 rpm
- Dead pedal feel off the line with poor boost build
- Whining, screaming or siren-type turbo noise under load
High-output MX-13 530 hp HE500VG turbo group. Useful for exact OEM searches around 2117463, 2301181, 2353021 and 2403671.
Common symptoms
- Strong turbo lag then a hard boost surge
- High-pitched whistle around 1400-1700 rpm
- Black smoke under full load with torque derate
Electric VGT actuator used with Holset HE400VG and HE500VG turbochargers on DAF MX Euro 6 engines. It is often blamed for boost faults, but the source reports stress that the turbo vane mechanism must be checked first.
Common symptoms
- Truck in limp mode with RPM capped around 1300
- No boost until the engine is well past 1200 rpm
- Turbo hunts or surges instead of building boost smoothly
Main MX-13 Euro 6 EGR valve interchange group. It combines repeated reports for 2339622 and linked replacements where symptoms are soot blocking, position errors, failed regens and derate.
Common symptoms
- Power derate or limp mode
- EGR valve stuck open or stuck closed in diagnostic software
- Rough idle, hunting or surging at cruise
Pierburg-supplied MX-11 Euro 6 EGR valve group. The main user intent is matching OEM numbers and understanding repeated failure symptoms from soot, actuator wear and DPF regeneration problems.
Common symptoms
- Power loss under load
- Black smoke and EGR estimated rate too high
- Aborted DPF regeneration
EGR valve group reported for XF/CF Euro 6 applications. Use this page for searches around 2123995, 2187602, 2256375 and Pierburg 7.04253.88.0.
Common symptoms
- Coolant loss without external leak
- EGR commanded versus actual mismatch
- DPF regeneration failure
Earlier EGR valve interchange group from the reports. Fitment was not fully specified, so use this as a lookup and diagnostic content page, not as a final fitment guarantee.
Common symptoms
- Rough idle or stalling at low speed
- Power loss and black smoke
- Engine warning lamp for EGR flow
MX-11 EGR valve report group using OEM 2104977 and related numbers. These same numbers also appear in a BPV report group, so exact OEM lookup should show both possible matches and request VIN/photo verification.
Common symptoms
- Limp mode after cold start
- EGR not reaching commanded position
- DPF differential pressure high
Back pressure valve report group for MX-11/MX-13 Euro 6 applications. The same OEM number appears in turbo reports too, so this page deliberately exposes the ambiguity and asks users to verify by VIN or photo.
Common symptoms
- Distinct lack of power under load
- Severe hesitation during acceleration
- Engine protection or torque limitation active
MX-13 Euro 6 BPV valve group from the repeated reports. Searchers usually need to match an OE number and understand weak engine-brake, chuffing exhaust and derate symptoms.
Common symptoms
- Engine brake suddenly weak or completely dead on descents
- Slow turbo spool and flat take-off after throttle lift
- Harsh barking or chuffing from the exhaust when braking with engine brake
Earlier MX-13 Euro 5 back pressure valve group for XF 105 and CF 85. Use this page for 1840165 and related PE/PEX search terms.
Common symptoms
- Loss of pull with a trailer on rolling roads
- Whistling or hissing around the hot side under engine braking
- Rough idle or occasional stall after throttle lift
HY35W wastegated turbo group for DAF LF and CF with Cummins ISBe 5.9L engines. Failure patterns are mainly shaft play, oil starvation and sticky wastegates.
Common symptoms
- Lazy boost rise and smoke between shifts
- Loss of power and slow turbo spool
- Excessive black smoke under acceleration
HX35W turbo group for DAF LF with Cummins ISBe6 6.7L engines. The repeated reports focus on bearing and seal failure, oil in charge pipes and underboost on motorway grades.
Common symptoms
- Black smoke under throttle from underboost
- Loss of power on motorway grades
- Whistling or screaming noise that builds with revs
Fuel / brake / bypass valve 4 refs B368 bypass valve data is reported in several ways: fuel bypass, wastegate/bypass valve and EGR cooler bypass actuator. The lookup page should therefore make the ambiguity visible and route users by fault code and symptom.
Common symptoms
- Reduced motor power and lazy spool-up
- Truck smokes more on hard acceleration
- Boost comes and goes instead of building cleanly
Fuel / brake / bypass valve 10 refs Cylinder 1 unit pump solenoid group for DAF DMCI/EUP systems. Intended for searches by B131, P0201, P0261, P0262 and related pump-unit assembly numbers.
Common symptoms
- Engine misfire on cylinder 1
- Rough idle and vibration
- Engine refuses to start or stalls immediately
Fuel / brake / bypass valve 7 refs Cylinder 2 pump unit solenoid group for DAF DMCI/EUP systems. Structured for OEM and P-code lookup around B132, P0202, P0264, P0265 and P0266.
Common symptoms
- Cylinder 2 misfire and vibration at idle
- Torque contribution from cylinder 2 too low
- Engine cuts out at higher RPM
Fuel / brake / bypass valve 6 refs Cylinder 4 unit pump solenoid group for DAF DMCI/EUP systems. Focuses on cylinder 4 misfire, P0204/P0270/P0271 fault code searches and high-mileage solenoid failures.
Common symptoms
- Cylinder 4 diesel knock under acceleration
- Jerky pull from 900 to 1200 rpm
- Cylinder 4 contribution too low
Fuel / brake / bypass valve 3 refs Cylinder 1 MX engine brake solenoid group. Searches usually combine B411 with P3405, P3407 or complaints about weak engine braking.
Common symptoms
- MX engine brake retard force reduced
- Engine brake loses one stage and feels weak
- DAVIE4 actuation test on brake cylinder 1 fails
Fuel / brake / bypass valve 1 refs Cylinder 3 MX engine brake solenoid group. Intended for B413, P3421, P3423 and P3424 searches plus diagnosis of intermittent retarder complaints.
Common symptoms
- Engine brake force markedly reduced
- Engine brake cuts in and out on long downhill runs
- DAVIE actuation test on cylinder 3 fails
Fuel / brake / bypass valve 1 refs Cylinder 4 MX engine brake solenoid group for B414 and P3425/P3427/P3428/P3429/P3431/P3432 searches.
Common symptoms
- MX engine brake noticeably weaker than normal
- Engine brake force drops as RPM falls
- DAVIE4 brake actuator self-test fails on cylinder 4