P217EFuel Injector Group H Supply Voltage Circuit Low
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- How the car detects it
- P217E flags the supply of injector group H as grounded, on GM's direct-injection V8 engines the injector of cylinder 8. GM lists it for the 6.2 LT4 in 2018 and in its 2016 table 16OBDG07A. With the high-side driver switched on, a current of 25 A or more means the line has found a path to ground; at 11 V or more, 10 bad samples out of 20 taken at 100 ms set the code as type A and light the MIL right away. Since the per-cylinder low-side codes P0282 and P0283 cover the return line, this code points specifically at the feed wire, the injector body or the driver. A practical check is to unplug the module and the injector and measure the feed wire to ground before suspecting the module. The engine loses cylinder 8. P217F is the high fault.
- What you may notice
- Check engine lamp on immediately
- Cylinder 8 misfire, engine shakes
- Likely causes
- LikelyCylinder 8 feed wire chafed to ground
- PossibleCylinder 8 injector shorted to its housing
- RareEngine control module output stage 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.