P216F code meaning
Fuel Injector Group F Supply Voltage Circuit High
Powertrain system Generic code P21xx codes Check engine light
What P216F means
P216F is set when the group F supply, on GM gasoline direct injection the high-side line of cylinder 6, shows voltage while the driver is off. GM's criterion in its 2016 (16OBDG07A) and 2018 LT4 tables is 1 V or less between the line and the controller supply, which means the wire is practically at battery level. At 11 V or more, 10 failures out of 20 samples at 100 ms store it as type A, MIL on the first trip. A short to power can keep current flowing through the injector or overload the driver, so the module disables that cylinder. Look for insulation damage where the harness meets brackets or the transmission, as described for the Impala in PI0631H, and for a connector bridged by moisture. Several high codes on different cylinders at once point to the module. P216E is the short to ground.
P216F 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 P216F
- Check engine lamp on immediately
- Cylinder 6 misfire
Common causes of P216F
- Most likelyCylinder 6 feed shorted to another powered wire
- PossibleEngine control module driver fault, especially with several high codes
- Less likelyMoisture in the injector connector
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 P216F 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. |
| 6F | The exact fault in that area. |
What to do next
- Note P216F 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 P216F
What does P216F mean?
P216F means "Fuel Injector Group F Supply Voltage Circuit High". P216F is set when the group F supply, on GM gasoline direct injection the high-side line of cylinder 6, shows voltage while the driver is off. It is a generic code, so it means the same on every make.
Is it safe to drive with P216F?
Drive gently and only to a workshop. With P216F the car can go into limp mode (reduced power) to protect itself.
Will P216F fail an emissions test?
Yes, it can. P216F 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 P216F to fix?
Difficulty: hard. A typical repair takes 0.8 to 5 hours of work. This is a job for a workshop.
Will P216F clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.