P217AFuel Injector Group G Supply Voltage Circuit/Open
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- How the car detects it
- Group G only exists on engines with seven or more injector groups, in practice eight-cylinder engines with direct injection. GM's 2023 and 2024 summary tables (23OBDG07, 24OBDG07) name the cylinder 7 injector G and use P217A for a short on its high side: less than 0.5 ohm between the module pin and ground while the driver is off, or to the injector supply while it is on. Two such events with more than 9 V on the battery store the code within one trip. As with groups E and F, GM keeps open circuits on the separate per-cylinder injector codes, so the title's open wording is misleading on these engines. No bulletin naming this code was found. The injector is switched off, cylinder 7 misfires and the engine runs noticeably rough. P217B and P217C are the dedicated low and high codes.
- What you may notice
- Check engine lamp on, cylinder 7 misfire
- Rough running under load
- Likely causes
- LikelyCylinder 7 injector feed shorted to ground or supply in the harness
- PossibleCylinder 7 injector shorted internally
- RareEngine control module driver faulty
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Hard · Usually a job for a workshop.Typical cost: €100 – €1,500
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.