Powertrain, generic (extended)

P2B60 Engine Coolant Flow Control Valve Position Sensor Circuit Range/Performance

Check engine lightOn
EmissionsRelevant
Drive cycleRequired
Limp modeNo

P2B60 checks whether the valve actually goes where it is told. On GM's 3.0 L Duramax the code sets when the gap between desired and measured position exceeds 12 % in 160 of 200 samples, only with a steady command, closed-loop control active and no coolant or outside temperature sensor fault (Type B). For LM2 trucks and SUVs GM issued 20-NA-039 and 22-NA-082 (ECM software), PIP5764 (corroded terminals at the centre actuator connector) and PIP5791, which has the valve swept from 25 to 95 % with GDS2 and then relearned. Hyundai and Kia link P2B60 to the cleaning routine of the ITM module on 1.6 T-GDI engines (23-EE-002H, 24-FL-003H, Kia ELE 285) and fix it with software.

Likely causes

Engine control software (GM 20-NA-039 / 22-NA-082, Hyundai/Kia ITM logic)
Corroded terminals at the valve actuator connector (GM PIP5764)
Valve sluggish or not learned, needs a relearn after test
Valve does not follow commands although wiring is fine

Symptoms

  • MIL on after two drives
  • Engine temperature fluctuates or warms up slowly
  • Often no driveability complaint beyond the warning lamp

Repair estimate

DifficultyMediumWorkshop job
Parts and labour€0–1,800
Time0–10 h

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

Parts involved

engine coolant flow control valvewiring harnessecm

Related codes

P2B5EP2B5FP2B61P00B7

References: gsi.ext.gm.com, static.nhtsa.gov, static.nhtsa.gov, static.nhtsa.gov.