Powertrain, generic (extended)

P2319 Ignition Coil G Primary Control Circuit High

Check engine lightOn

EmissionsRelevant

Drive cycleRequired

Limp modePossible

P2319 sets when the coil G control line, belonging to cylinder 7 of a V8 or larger engine, shows a short to voltage. GM's 2019 tables include it for the LT5 Corvette V8 as a Type B code with 50 of 63 failed samples. Ford describes the protective reaction in detail: after a coil-driver fault the injector of that cylinder stays off for 30 s; on six- and eight-cylinder engines as many as two cylinders can be shut off at the same time. After the pause the injector is switched on again, and if the fault returns within about 0.1 s fuel is cut once more. Message 52455 from Ford (2024) on 6.8 and 7.3-litre trucks lists P2319 with the other codes that may point to the wrong cylinder; the real culprit is the cylinder that drops out in the power balance test without a code of its own.

Likely causes

Coil G control wire shorted to a supply line

Internal fault in coil G

Code assigned to the wrong cylinder by PCM software (Ford SSM 52455)

Engine module output stage defective

Symptoms

Check engine light on
Cylinder 7 shut off for periods of 30 s (Ford)
Rough running and loss of power

Repair estimate

DifficultyMediumDIY possible

Parts and labour€40–400

Time0.3–2 h

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

Parts involved

ignition coilcoil driverignition wiring

Related codes

P2318 P0357 P2316 P2322 P0307

References: gsi.ext.gm.com, newtonnet.co.uk, static.nhtsa.gov.