P22DB code meaning
Cylinder 1 Alternative Fuel Injector Control Circuit High
Powertrain system Generic code P22xx codes Check engine light
What P22DB means
P22DB flags a control circuit of the cylinder 1 gas injector that stays too high. TransEco Energy's AFCM fault list traces it to a short to battery voltage, lights the MIL for bi-fuel use and applies the same fallback as for the gasoline injector fault; Ford's 2014 code list also marks P22DB for the MIL. When the line is held at supply voltage, the driver cannot pull it down, so the injector never opens and cylinder 1 receives no gas: a lean misfire on that cylinder in gas mode is the typical result, often together with P0301. Many output stages also shut off to protect themselves from the excessive current. A coil with shorted turns can look the same. P22DA is the low side, P0262 the code for the gasoline injector.
P22DB 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 P22DB
- Malfunction indicator lamp on
- Lean misfire on cylinder 1 in gas mode, often with P0301
- Engine runs normally on gasoline
Common causes of P22DB
- Most likelyControl wire shorted to battery or injector supply voltage
- PossibleShorted turns in the cylinder 1 gas injector coil
- Less likelyOutput stage of the gas control module damaged
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 P22DB 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). |
| DB | The exact fault in that area. |
What to do next
- Note P22DB 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 P22DB
What does P22DB mean?
P22DB means "Cylinder 1 Alternative Fuel Injector Control Circuit High". P22DB flags a control circuit of the cylinder 1 gas injector that stays too high. It is a generic code, so it means the same on every make.
Is it safe to drive with P22DB?
Drive gently and only to a workshop. With P22DB the car can go into limp mode (reduced power) to protect itself.
Will P22DB fail an emissions test?
Yes, it can. P22DB 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 P22DB to fix?
Difficulty: medium. A typical repair takes 0.5 to 3 hours of work. This is a job for a workshop.
Will P22DB clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.