P03F2: A low exhaust profile-C circuit must be judged during its on command

P03F2 reports a low control-circuit condition for bank 1 exhaust profile actuator C. The cited GM strategy watches exhaust profile actuator 3 while its driver is energized and classifies an abnormal feedback response as a connection toward ground.

Command state makes a low reading meaningful

The published electrical specification is a signal-to-controller-ground impedance below 0.5 Ω. The controller infers the failure through calibrated voltage thresholds. That does not turn the value into an instruction to connect an ohmmeter to a powered output or an unspecified connector.

An on command is explicitly required, together with diagnostic enablement, supply above 11 V and crank/run ignition. Four failures out of five samples mature the condition. The code therefore represents repeated eligible observations, rather than every occasion on which a signal happens to be low.

Keep the channel and operating conditions aligned

Retain actuator 3's command, feedback and contemporaneous supply. A low output while the controller intentionally leaves it off is not the same diagnostic event. A low supply outside the stated window also prevents reproducing the documented comparison faithfully.

The source distinguishes this ground-directed classification from an open path or a power-directed fault, but it cannot locate the problem inside the load, wiring or controller. Those are circuit-isolation questions for the applicable vehicle procedure. Mechanical profile motion should not be diagnosed from this electrical classification alone.

Source and applicability

2025 GM 03B documented monitor only. Vehicle, engine and controller calibration applicability must be established separately; no model fitment is inferred from the file. GM PDF, physical page 444.