P2152 is set when the powertrain control module (PCM) detects an open circuit in the supply voltage circuit for fuel injector group C (typically injectors 4‑6 on a V6 engine). This means the PCM is not seeing the expected voltage reaching those injectors, which can prevent them from operating correctly.
A broken wire, corroded terminal, or loose pin in the harness that supplies voltage to the injector group can cause the PCM to read an open circuit.
If the fuse or link that powers the injector supply circuit is open, voltage will not reach the injectors, triggering the code.
Oxidation, moisture intrusion, or physical damage to the connector on the injector side can interrupt voltage flow.
The internal driver that switches voltage to the injector group may fail, though this is far less common than wiring or fuse issues.
A loss of power or ground to the PCM itself can prevent it from driving the injector circuit correctly; this is rare and usually accompanied by other codes.
No. The PCM is rarely the cause; most cases are due to wiring, connectors, or a blown fuse. Replacing the PCM without first checking those items usually does not resolve the code.
A failed injector itself does not create an open voltage supply circuit; the code is triggered by missing voltage, not by the injector’s internal resistance. However, a shorted injector could blow the fuse, indirectly leading to the same symptom.
Clearing the code without repairing the underlying issue will allow the PCM to set it again once the condition is detected. Proper diagnosis and repair are required before the code will stay cleared.