P0272Cadillac LyriqYears: 1996 - 2026
Injector Circuit Open - Cylinder 4
Reviewed by ASE Certified Technician
What does this mean?
Code P0272 indicates the injector circuit for Cylinder 4 has a open condition. The PCM detected an abnormal voltage or resistance.
Disclaimer: This diagnostic code is part of the standard OBD2 system and can apply to Cadillac Lyriq models manufactured from 1996 to 2026. However, please note that the presence of this specific code depends on your vehicle's exact engine configuration, options, and production year.
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Common Causes
Clogged or faulty fuel injector
Damaged, chafed, or broken wiring harness
Corroded or loose electrical connector
Internal PCM/ECM failure
Symptoms to Watch For
- Check Engine Light is illuminated
- Engine misfiring or shaking sensation
- Rough or unstable idle
- Significant loss of engine power
- Poor acceleration or sluggish response