Powertrain, generic (extended)

P2E67 Engine Coolant Bypass Valve E Stuck Closed

Check engine lightOn
EmissionsRelevant
Drive cycleRequired
Limp modePossible

P2E67 means valve E stays shut although the control asked it to open. No manufacturer documents valve E publicly. GM's closed-side test on block valve D (P26C2) shows the pattern: a gap of more than 5° between commanded and measured angle while the raw feedback stays below 50°, 4 of 5 seconds, Type B in the 2025 table 25OBDG03B; the test pauses during end-stop learning. Ford patents describe temperature-based checks instead: valves are closed one at a time and the coolant temperature reaction is compared with the expected one, and a transmission warm-up valve counts as stuck closed when the fluid fails to warm as expected after the open command. A closed valve can be harmless (heater path) or serious (block or radiator path, risk of hot spots).

Likely causes

Valve jammed closed by deposits, debris or swollen seals
Actuator motor or gearing unable to open the valve
Position feedback stuck at the closed value
Wrong coolant or trapped air after service upsetting the temperature-based check

Symptoms

  • Check engine light
  • Little or no heat from the heater, or rising engine temperature, depending on the circuit
  • Possible reduced engine power to protect the engine

Repair estimate

DifficultyMediumWorkshop job
Parts and labour€120–900
Time1–4 h

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

Parts involved

engine coolant bypass valve ewiring harnessecm

Related codes

P2E65P2E66P26C2P2E81P26B2

References: law.cornell.edu, gsi.ext.gm.com, image-ppubs.uspto.gov, image-ppubs.uspto.gov.