P22DA code meaning
Cylinder 1 Alternative Fuel Injector Control Circuit Low
Powertrain system Generic code P22xx codes Check engine light
What P22DA means
P22DA means the cylinder 1 gas injector control wire reads too low. TransEco Energy's DTC list for its CNG control module (AFCM v1.4) blames either a grounded wire or an open line, turns on the MIL in bi-fuel installations and reacts the same way it would to the matching gasoline injector fault. Ford's 2014 OBD code list carries P22DA as a MIL code as well. With a low-side driver, a control wire touching ground can keep the injector energized whenever its supply is live, so cylinder 1 may get gas without pause and run very rich; an interrupted wire leaves it without gas. P22DB covers the high side and P22D9 the plain open circuit. The gasoline injector of the same cylinder reports through P0261 instead.
P22DA 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 P22DA
- Malfunction indicator lamp on
- Very rough running on cylinder 1 in gas mode, possibly rich misfire
- Gas system switches back to gasoline
Common causes of P22DA
- Most likelyControl wire of the cylinder 1 gas injector chafed through to ground
- PossibleInterrupted control wire or connector (logged as Low by some modules)
- Less likelyWater or corrosion in the injector connector
- Less likelyFaulty output stage 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 P22DA 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). |
| DA | The exact fault in that area. |
What to do next
- Note P22DA 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 P22DA
What does P22DA mean?
P22DA means "Cylinder 1 Alternative Fuel Injector Control Circuit Low". P22DA means the cylinder 1 gas injector control wire reads too low. It is a generic code, so it means the same on every make.
Is it safe to drive with P22DA?
Drive gently and only to a workshop. With P22DA the car can go into limp mode (reduced power) to protect itself.
Will P22DA fail an emissions test?
Yes, it can. P22DA 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 P22DA to fix?
Difficulty: medium. A typical repair takes 0.5 to 3 hours of work. This is a job for a workshop.
Will P22DA clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.