P22F7 code meaning
Cylinder 8 Alternative Fuel Injector Control Circuit High
Powertrain system Generic code P22xx codes Check engine light
What P22F7 means
P22F7 means the drive line of the cylinder 8 gas injector cannot be pulled down and stays near supply voltage. Ford lists it with MIL in the 2014 code list; in the conversion data from Altech-Eco/TransEco the cause given is a short to power, keeps the MIL off on dedicated CNG engines and marks the fault as not detectable by gas module version 1.4. Many output stages shut themselves off under such a short to protect the driver, so the valve stays closed and cylinder 8 runs without gas. A bi-fuel truck usually leaves gas mode and drives on gasoline; a dedicated CNG engine keeps misfiring. Check for a pinched wire touching a supply line before replacing the valve or module.
P22F7 at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modePossible
- Repair difficultyMedium
- Typical labor0.5 to 3 hours
- Clears after repairWhen cleared with a scanner
Symptoms of P22F7
- Cylinder 8 lean misfire in gas mode
- Check engine light on (bi-fuel versions)
- Vehicle stays on gasoline
Common causes of P22F7
- Most likelyCylinder 8 control wire pinched against a supply line
- PossibleSupply and control pins swapped in the gas harness
- Less likelyDamaged output stage in the control module
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Alternative fuel injector
What each part of P22F7 means
| P | Powertrain system: engine, fuel system, ignition, emissions and transmission. |
| 2 | Generic code (second SAE range): it means the same on every make. |
| 2 | Area: fuel and air metering (injector circuit). |
| F7 | The exact fault in that area. |
What to do next
- Note P22F7 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 P22F7
What does P22F7 mean?
P22F7 means "Cylinder 8 Alternative Fuel Injector Control Circuit High". P22F7 means the drive line of the cylinder 8 gas injector cannot be pulled down and stays near supply voltage. It is a generic code, so it means the same on every make.
Is it safe to drive with P22F7?
Drive gently and only to a workshop. With P22F7 the car can go into limp mode (reduced power) to protect itself.
Will P22F7 fail an emissions test?
Yes, it can. P22F7 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 P22F7 to fix?
Difficulty: medium. A typical repair takes 0.5 to 3 hours of work. This is a job for a workshop.
Will P22F7 clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.