What does DAF fault code P0402 point to?

P0402 is reported in this data as: EGR flow too high / excessive. It can be linked with 2339622, 1711516 depending on truck model, engine and live diagnostic data.

Can I order a part from fault code P0402 only?

Use the fault code to narrow the diagnosis, then verify the installed OEM number, VIN, connector, actuator type and part photos before ordering or quoting.

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Fault-code lookup

DAF fault code P0402: likely components, OEM numbers and symptoms.

EGR flow too high / excessive. This page groups every component report connected with P0402, so a mechanic can move from the error code to the relevant OEM numbers, defect symptoms and fitment checks.

A fault code alone is not a parts order. Confirm with live data, VIN, installed OEM number, connector and part photos before quoting or fitting.

Likely components

Component families linked with P0402.

The same code can appear with different root causes. Use the OEM number and symptom pattern to choose the right branch.

EGR valve

2339622 · MX-13 Euro 6 EGR valve

DAF / PACCAR

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.

Top symptoms

Power derate or limp mode
EGR valve stuck open or stuck closed in diagnostic software
Rough idle, hunting or surging at cruise

OEM numbers

2339622 1953573 1954014 1960473 2021931 2052205 2104971 2123990

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EGR valve

1711516 · Earlier DAF EGR valve 1711516

DAF / PACCAR

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.

Top symptoms

Rough idle or stalling at low speed
Power loss and black smoke
Engine warning lamp for EGR flow

OEM numbers

1711516 1681971 1812519 1406454 1812518 1409255

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Defect symptoms

Symptoms reported with P0402

Power derate or limp mode

EGR valve stuck open or stuck closed in diagnostic software

Rough idle, hunting or surging at cruise

Black smoke when pulling away or backing under a trailer

Failed regeneration and high DPF differential pressure

Coolant loss with no visible external leak

AdBlue or NOx after-cat secondary faults from incorrect EGR rate

Rough idle or stalling at low speed

Power loss and black smoke

Engine warning lamp for EGR flow

Increased fuel consumption

Failed emissions test or high NOx reading

OEM numbers

OEM references to check

Use these links when the workshop note only contains an OE number instead of the exact part family.

Why it happens

Likely root causes behind P0402

Carbon and soot cake the EGR valve plate, shaft and valve seat.
Condensation and oil mist form acidic sludge after the EGR cooler.
Motor gearbox wears from continuous modulation and high resistance.
Coolant leakage through the cooler or valve interface corrodes electronics and accelerates sludge build-up.
Position sensor drift causes commanded-versus-actual mismatch.
Excessive soot build-up blocks EGR flow.
Actuator motor burns out after high resistance at the valve shaft.
Valve sticks open or closed after long-mileage exhaust contamination.

Fitment

Trucks and engines that report P0402

Model	Engine	Years
XF 106	MX-13 Euro 6 12.9L	2013-2023
CF 85	MX-13 Euro 6	2013-2021
CF 430	MX-13 Euro 6	2017-2023
CF 480	MX-13 Euro 6	2017-2023
CF 530	MX-13 Euro 6	2017-2023
XG	MX-13 Euro 6	2021-2023
DAF XF / CF	Earlier EGR-equipped engines	2001-2013

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