Powertrain, generic · Fuel and air metering (injector circuit)

P02F8 Cylinder 11 Injector Circuit Range/Performance

Check engine lightOn
EmissionsRelevant
Drive cycleRequired
Limp modePossible

P02F8 reports an electrically implausible response of the cylinder 11 injector – not an open or short circuit (those are P0211, P0291 and P0292), but a current or voltage pattern outside the expected range. Cylinder 11 exists only on engines with twelve or more cylinders; GM and Ford documents stop at cylinder 8, so the description follows CARB and the documented checks for cylinders 1–8 (current fall time, voltage feedback, regulator at its limit). The injector may be shut off, causing misfire.

Likely causes

Injector electrically aged (piezo capacitance, coil resistance)
Contact resistance in the injector 11 connector or wiring
Injector mechanically sticking (valve lift)
Injector driver stage in the engine module

Symptoms

  • Check engine light on
  • Rough running, misfire on cylinder 11
  • Loss of power, smoke (diesel)

Repair estimate

DifficultyHardWorkshop job
Parts and labour€100–900
Time1–4 h

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

Parts involved

fuel injector cylinder 11injector wiringengine control module

Related codes

P0211P0291P0292P0293P02F9P0311

References: law.cornell.edu, gsi.ext.gm.com.