P22F0 code meaning
Cylinder 6 Alternative Fuel Injector Control Circuit Range/Performance
Powertrain system Generic code P22xx codes Check engine light
What P22F0 means
Unlike the pure wiring faults P22EE/P22EF, this code is meant for a cylinder 6 gas injector circuit that is electrically intact but behaves implausibly, for example a current rise or switching response that does not fit the command. No manufacturer documents this code publicly: neither the Ford 2014 code list nor the Altech-Eco/TransEco CNG table contains it; both stop at Low and High for this cylinder. The basis is therefore the CARB requirement that output components be checked for proper functional response, not only for circuit continuity. If a manufacturer uses it, a sticking or fouled gas valve and resistance drift of the coil would be the likely triggers, with uneven running on gas.
P22F0 at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modePossible
- Repair difficultyMedium
- Typical labor0.5 to 3 hours
- Clears after repairAfter a drive cycle
Symptoms of P22F0
- Uneven idle or hesitation in gas mode
- Cylinder 6 misfire count rising on gas only
- Check engine light possible
Common causes of P22F0
- PossibleCylinder 6 gas valve sticking from oil or deposits carried in the gas
- PossibleCoil resistance drifted out of the expected window
- Less likelyCorroded plug causing a slow current rise
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 P22F0 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). |
| F0 | The exact fault in that area. |
What to do next
- Note P22F0 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 P22F0
What does P22F0 mean?
P22F0 means "Cylinder 6 Alternative Fuel Injector Control Circuit Range/Performance". Unlike the pure wiring faults P22EE/P22EF, this code is meant for a cylinder 6 gas injector circuit that is electrically intact but behaves implausibly, for example a current rise or switching response that does not fit the command. It is a generic code, so it means the same on every make.
Is it safe to drive with P22F0?
Drive gently and only to a workshop. With P22F0 the car can go into limp mode (reduced power) to protect itself.
Will P22F0 fail an emissions test?
Yes, it can. P22F0 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 P22F0 to fix?
Difficulty: medium. A typical repair takes 0.5 to 3 hours of work. This is a job for a workshop.
Will P22F0 clear itself after the repair?
After the repair the car has to complete a drive cycle (a mix of city and highway driving) before the test runs again. Until then the readiness monitor shows "not ready", which can fail an inspection.