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P22E3: Cylinder 3 Alternative Fuel Injector Control Circuit High

P22E3 tells that the cylinder 3 gas injector circuit is held high. TransEco Energy's AFCM list names a short to power, MIL on for bi-fuel use, and Ford's 2014 code list also ties P22E3 to the MIL. With the line stuck at supply voltage the injector cannot be switched on, so cylinder 3 gets no gas and misfires lean. In GM's bi-fuel Silverado layout the ECM calculates the pulse widths while a separate fuel injector control module passes them to the gas injectors, so the fault can sit in the wiring between that module and the injector, in the injector itself, or in the module output. Gasoline operation remains normal. P22E2 is the low side and P0268 the high-side code of the gasoline injector.

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 3 is numbered according to the manufacturer: check your engine's manual before working on it.

Symptoms

  • Malfunction indicator lamp on
  • Lean misfire on cylinder 3 in gas mode, often with P0303
  • Noticeable loss of power on gas

Most likely causes

  • Cylinder 3 control wire shorted to a 12 V feed
  • Shorted turns in the cylinder 3 gas injector
  • Faulty output of the injector 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 P22E3 means

  • P: Powertrain: engine and transmission
  • 2: Generic code: same on every make
  • 2: Fuel injection
  • E3: Specific fault in that system

Frequently asked questions

Can I keep driving with code P22E3?

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 P22E3?

The most common causes are: cylinder 3 control wire shorted to a 12 V feed; shorted turns in the cylinder 3 gas injector; faulty output of the injector control module.

Related codes

Sources

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.