What does DAF fault code P0261 point to?

P0261 is reported in this data as: Cylinder 1 pump/injector control circuit low. It can be linked with B131 depending on truck model, engine and live diagnostic data.

Can I order a part from fault code P0261 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 P0261: likely components, OEM numbers and symptoms.

Cylinder 1 pump/injector control circuit low. This page groups every component report connected with P0261, 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 P0261.

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

Fuel / brake / bypass valve

B131 · B131 pump unit valve cyl 1

DAF / PACCAR

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.

Top symptoms

Engine misfire on cylinder 1
Rough idle and vibration
Engine refuses to start or stalls immediately

OEM numbers

B131 1668325 1827043 1861200 BEBU4B00000 BEBU5A00000 0414755006 0414755007

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Defect symptoms

Symptoms reported with P0261

Engine misfire on cylinder 1

Rough idle and vibration

Engine refuses to start or stalls immediately

Cylinder 1 contribution low

Hard hot start and white haze for a few seconds

OEM numbers

OEM references to check

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

B131 1668325 1827043 1861200 BEBU4B00000 BEBU5A00000 0414755006 0414755007 313GC5230M 313GC5230MX

Why it happens

Likely root causes behind P0261

Solenoid winding short or open circuit after heat-cycle fatigue.
ECU pin or harness short to ground or supply.
Low-pressure gear pump wear sends metal debris into high-tolerance pump elements.
Mechanical pusher wear, nozzle clogging or valve gap outside range.

Fitment

Trucks and engines that report P0261

Model	Engine	Years
XF 95	PACCAR XE/MX Euro 3	2001-2006
XF 105	PACCAR MX Euro 3/4/5	2005-2013
CF 75	PACCAR PR Euro 3/4/5	2001-2013
CF 85	PACCAR MX Euro 3/4/5	2001-2013

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