Powertrain, generic (extended)

P2B61 Engine Coolant Flow Control Valve Stuck Closed

Check engine lightOn
EmissionsRelevant
Drive cycleRequired
Limp modePossible

P2B61 indicates that the coolant flow control valve stays closed although the engine computer asks it to open, so coolant cannot reach the radiator path as intended. Jaguar Land Rover uses it on the 2.0-litre Ingenium petrol four (2019–2020): in bulletin JLRTB02030NAS1, P2B61-73 appears with P26CB-72 when the movable shroud that diverts coolant in the electrically controlled pump stays put, and the PCM runs the fans at full speed to prevent overheating; a new pump and PCM software are the fix. FCA lists P2B61-00 for the Alfa Romeo Giulia and Stelvio 2.0 turbo (21-045-19, 21-035-20). Mazda uses the code on SKYACTIV-G engines but labels it a range/performance fault of its coolant control valve circuit.

Likely causes

Valve or diversion shroud mechanically stuck closed (JLR variable coolant pump)
Engine control software that needs an update
Valve drive or its wiring no longer moves the valve

Symptoms

  • Radiator fans running constantly at high speed, loud noise from the engine bay
  • Rising engine temperature under load
  • Check engine light on

Repair estimate

DifficultyHardWorkshop job
Parts and labour€100–1,500
Time0.5–3 h

Typical range across vehicles; the real cost depends on what the testing finds.

Parts involved

engine coolant flow control valvewiring harnessecm

Related codes

P2B60P26CBP00B7P0126

References: static.nhtsa.gov, static.nhtsa.gov, static.nhtsa.gov, static.nhtsa.gov.