P22E6 code meaning
Cylinder 4 Alternative Fuel Injector Control Circuit Low
Powertrain system Generic code P22xx codes Check engine light
What P22E6 means
P22E6 reports a low signal on the cylinder 4 gas injector control wire. TransEco Energy's AFCM table gives short to ground or open as the cause and turns the MIL on in bi-fuel installations, keeping the same failure response as for gasoline; Ford's 2014 code list carries P22E6 with the MIL as well. On Ford's 2003 bi-fuel CNG system the control module would only start the engine on gas once rail pressure reached about 517 kPa, so a failed gas start alone does not prove an injector fault: check for this code first. A grounded line can hold cylinder 4 permanently open and flood it; an interrupted one leaves it dry. P22E7 is the high side, P22E5 the plain open circuit, and P0270 the gasoline injector code.
P22E6 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 P22E6
- Malfunction indicator lamp on
- Cylinder 4 runs rich or cuts out on gas
- Engine stays on or returns to gasoline
Common causes of P22E6
- Most likelyCylinder 4 control wire grounded through damaged insulation
- PossibleSeparated terminal or broken wire in the cylinder 4 circuit
- Less likelyDamaged driver output in the gas 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 P22E6 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). |
| E6 | The exact fault in that area. |
What to do next
- Note P22E6 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 P22E6
What does P22E6 mean?
P22E6 means "Cylinder 4 Alternative Fuel Injector Control Circuit Low". P22E6 reports a low signal on the cylinder 4 gas injector control wire. It is a generic code, so it means the same on every make.
Is it safe to drive with P22E6?
Drive gently and only to a workshop. With P22E6 the car can go into limp mode (reduced power) to protect itself.
Will P22E6 fail an emissions test?
Yes, it can. P22E6 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 P22E6 to fix?
Difficulty: medium. A typical repair takes 0.5 to 3 hours of work. This is a job for a workshop.
Will P22E6 clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.