P217F code meaning
Fuel Injector Group H Supply Voltage Circuit High
Powertrain system Generic code P21xx codes Check engine light
What P217F means
P217F is the last code of the injector group series: the feed of group H, cylinder 8 on GM's direct-injection V8 engines, shows supply voltage although the high-side driver is switched off. GM's tables 16OBDG07A, 18OBDG03A for the 6.2 LT4 and 19OBDG03A set it when the line stays within 1 V of the controller supply, counting 10 failures out of 20 samples at 100 ms with 11 V or more, type A, MIL on the first trip. A short to power can hold the injector partly open or stress the driver, so the module cuts cylinder 8. Wiring that touches a powered conductor, moisture in the plug or a failing module output are the candidates; high codes on several cylinders together suggest the module. P217E is the short to ground, P217D the general fault.
P217F at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modePossible
- Repair difficultyHard
- Typical labor0.8 to 5 hours
- Clears after repairWhen cleared with a scanner
Symptoms of P217F
- Check engine lamp on immediately
- Cylinder 8 misfire, possibly rich running on bank 2
Common causes of P217F
- Most likelyCylinder 8 feed shorted to a powered wire
- PossibleMoisture or corrosion in the injector connector
- Less likelyEngine control module output stage faulty
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Fuel injectorInjector wiringEngine control module
What each part of P217F means
| P | Powertrain system: engine, fuel system, ignition, emissions and transmission. |
| 2 | Generic code (second SAE range): it means the same on every make. |
| 1 | Area: fuel and air metering. |
| 7F | The exact fault in that area. |
What to do next
- Note P217F and any other codes stored with it: several codes together often point to one cause.
- Check for loose connectors and damaged wiring around the parts the code names.
- Check open recalls for your car: some faults are fixed for free by the dealer. Enter your VIN.
- Clear the code only after the repair. If it comes back, the fault is still there.
Buying a used car? Scan it for stored codes before you pay. A recently cleared memory can hide a problem.
Questions about P217F
What does P217F mean?
P217F means "Fuel Injector Group H Supply Voltage Circuit High". P217F is the last code of the injector group series: the feed of group H, cylinder 8 on GM's direct-injection V8 engines, shows supply voltage although the high-side driver is switched off. It is a generic code, so it means the same on every make.
Is it safe to drive with P217F?
Drive gently and only to a workshop. With P217F the car can go into limp mode (reduced power) to protect itself.
Will P217F fail an emissions test?
Yes, it can. P217F is emissions-related, so most inspection programs fail a car while it is stored or while the check engine light is on.
How hard is P217F to fix?
Difficulty: hard. A typical repair takes 0.8 to 5 hours of work. This is a job for a workshop.
Will P217F clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.