P22E2 — Cylinder 3 alternative-fuel injector control circuit — low electrical level

P22E2 concerns cylinder 3 alternative-fuel injector control circuit. The monitor reports an electrical level below its expected range. The definition selects cylinder 3 and the alternative-fuel injection circuit. A low circuit level does not directly prove lean combustion.

Affected system: Alternative-fuel supply and injection

Symptoms

• Warning light may illuminate
• Related system function may be impaired
• Vehicle-specific symptoms vary

Possible causes

• Fuel supply or pressure issue, restricted injector, actuator fault, connector or wiring damage
• Related wiring, connector, power or ground fault
• Vehicle-specific mechanical or control issue

What to check

• Record stored and pending codes and freeze-frame data
• Check fuel supply and pressure readings, electrical supply and ground, and the relevant injector or regulator circuit before replacing parts.
• Confirm measured values against the vehicle service information
• Retest under the conditions that set the code
• Check fuel supply and pressure readings, electrical supply and ground, and the relevant injector or regulator circuit before replacing parts.
• Repair the verified cause and confirm the code does not return

Also written as: P22E2-00, P22E200 (some scan tools add the fault-type byte, e.g. -00).