P22EB reports that the cylinder 5 gas injector control circuit is too high, which TransEco Energy's AFCM list attributes to a short to power with the MIL on for bi-fuel use; Ford's 2014 code list likewise carries P22EB for the MIL. The injector stays closed, so cylinder 5 burns no gas and misfires lean, usually logged together with P0305. Gas injectors pull more current than gasoline injectors: Ford's 2003 bi-fuel CNG documentation notes that their drivers had to be stronger because of the extra heat, which also means a shorted coil quickly overloads the output. Measure the coil resistance and look for chafing against a live feed. P22EA is the low side; the gasoline injector of cylinder 5 reports P0274.
High severity. Can I keep driving?If you smell gas, do not keep driving or start the engine: move away and call for assistance. With no smell, drive moderately to an authorized shop.
Cylinder 5 is numbered according to the manufacturer: check your engine's manual before working on it.
Symptoms
- Malfunction indicator lamp on
- Lean misfire on cylinder 5 in gas mode, often with P0305
- Normal running on gasoline
Most likely causes
- Cylinder 5 control wire chafed against a supply wire
- Overheated cylinder 5 gas injector with shorted turns
- Overloaded driver output in the gas control module
What to check, in order
Start with the simplest. You can tick off each step.
Good to know
- Repair difficulty: medium
- It can trigger limp mode.
- It affects emissions.
What each character of P22EB means
- P: Powertrain: engine and transmission
- 2: Generic code: same on every make
- 2: Fuel injection
- EB: Specific fault in that system
Frequently asked questions
Can I keep driving with code P22EB?
If you smell gas, do not keep driving or start the engine: move away and call for assistance. With no smell, drive moderately to an authorized shop.
What causes code P22EB?
The most common causes are: cylinder 5 control wire chafed against a supply wire; overheated cylinder 5 gas injector with shorted turns; overloaded driver output in the gas control module.
Related codes
- P22E9Cylinder 5 Alternative Fuel Injector Control Circuit/Open
- P22EACylinder 5 Alternative Fuel Injector Control Circuit Low
- P22ECCylinder 5 Alternative Fuel Injector Control Circuit Range/Performance
- P22E7Cylinder 4 Alternative Fuel Injector Control Circuit High
- P0274Cylinder 5 Injector A Circuit High
- P0305Cylinder 5 Misfire Detected
Sources
- transecoenergy.com: DTC List
- performanceparts.ford.com: 2014 BOSS 302S OBDII Codes
- static.nhtsa.gov: INRD PE08063 33504P
Values and procedures vary by manufacturer. If it affects brakes, steering, fuel or high voltage, see a professional. Updated: 2026-11-04. How we build these pages.