What does code P21EE mean?

Q: What does code P21EE mean?

Cylinder 10 Injector B Circuit Low. P21EE indicates that the powertrain control module (PCM) has detected an abnormally low voltage on the control circuit for fuel injector B on cylinder 10, which is typically the second injector in that cylinder's firing order. The PCM monitors the injector driver circuit and sets this code when the commanded signal falls outside the expected voltage range, often indicating a short to ground or an open circuit.

DTC codes / P21xx · Fuel and air metering / P21EE

P21EECylinder 10 Injector B Circuit Low

P21EE indicates that the powertrain control module (PCM) has detected an abnormally low voltage on the control circuit for fuel injector B on cylinder 10, which is typically the second injector in that cylinder's firing order. The PCM monitors the injector driver circuit and sets this code when the commanded signal falls outside the expected voltage range, often indicating a short to ground or an open circuit.

SystemPowertrain

Code typeGeneric (all makes)

SeverityMedium

Fix difficultyIntermediate

AreaFuel and air metering

Guidance is general and written for all OBD-II vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.