P2155 Code: Meaning, Causes, and Symptoms | OBD2 Codes
P2155 – Cylinder 4 Injector High Control Circuit
P2155 Possible Symptoms
Engine Light ON (or Service Engine Soon Warning Light)
P2155 Possible Causes
Faulty Fuel Injector Group 4,Fuel Injector Group 4 harness is open or shorted,Fuel Injector Group 4 circuit poor electrical connection,Faulty Engine Control Module (ECM)
The Engine Control Module (ECM) supplies voltage to each fuel injector on the high control circuits. The ECM energizes each fuel injector by grounding the low control circuit of the fuel injector. The ECM monitors the status of the fuel injector circuits. When a fuel injector circuit condition is detected by the ECM, the affected fuel injector(s) is disabled.