Cause
Failed coil supply feed or relay
The power feed to the ignition coils lost, through a failed relay, fuse or supply wire. All the coils on that feed lose power together, which is the signature: a complete loss of spark rather than a single-cylinder misfire.
The engine cranks and will not start, with no spark on any cylinder, and the module reports several coil circuits at once. Several coil codes together is a supply fault, not several failed coils — and that inference saves working through them individually.
The relay is the usual failure and the easiest to test by substituting an identical one from the same box. Check the feed at a coil connector with the ignition on: voltage present means the fault is downstream in the coils or their control, and voltage absent puts it in the relay, the fuse or the harness. Ask what killed a blown fuse — a shorted coil primary takes the fuse with it, and a replacement into the same short blows again.
Typically a moderate job.
Some of these codes mean you should stop driving
2 of the 2 codes this can cause indicate a fault where continuing to drive risks damage or is unsafe. Which one you have matters more than the cause does — read the code's own page before deciding.
Codes this can cause (2)
Codes where this is a likely explanation first, rather than merely a possible one.
Information, not instruction
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Have anything you intend to act on checked by a trained person against the manufacturer's own procedure for your vehicle. Nothing here replaces that procedure.
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