What does code P2147 mean?

Q: What does code P2147 mean?

Fuel Injector Group 'A' Supply Voltage Circuit Low. P2147 means the engine control module (ECM) has detected that the supply voltage feeding the fuel injectors in group 'A' has dropped below the expected threshold while the circuit is active. The ECM monitors the voltage on the common power feed to that injector group and flags the code when the reading stays low, indicating a short to ground, high resistance, or a failing power source.

DTC codes / P21xx · Fuel and air metering / P2147

P2147Fuel Injector Group 'A' Supply Voltage Circuit Low

P2147 means the engine control module (ECM) has detected that the supply voltage feeding the fuel injectors in group 'A' has dropped below the expected threshold while the circuit is active. The ECM monitors the voltage on the common power feed to that injector group and flags the code when the reading stays low, indicating a short to ground, high resistance, or a failing power source.

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.