P0232 means the engine computer has detected an abnormally high voltage on the fuel pump’s secondary (monitor/feedback) circuit. This circuit reports whether the fuel pump driver/relay module is actually running the pump, so a continuously high reading usually indicates the feedback line is stuck near battery voltage or the driver is not switching properly.
An open, short-to-voltage, corroded pin, or chafed wire in the secondary/monitor circuit can leave the feedback signal pulled high, which the PCM reads as a high-voltage fault.
If the module that switches and monitors the fuel pump does not ground or pulse the monitor line correctly, the PCM will see a constant high voltage and set P0232.
A failing or incorrect fuel pump that pulls too much current can overload or shut down the driver module, distorting or interrupting the monitor signal.
A relay that is stuck, missing a control ground, or has a failing coil driver can keep the pump powered and the monitor circuit at a high level.
The PCM misreading the monitor circuit is possible but uncommon; it should only be considered after wiring, the driver/relay module, and the pump have been ruled out.
Yes, but indirectly. A pump that draws excessive current can make the driver module drop out or distort the monitor circuit. However, wiring and driver-module faults are more common, so check those first.
No, not reliably. The fuel pump may stop without warning and cause the engine to stall or leave you with a no-start condition.
Usually no. PCM failure is uncommon for this code. Most cases are caused by wiring, connectors, the fuel pump driver/relay module, or the fuel pump itself. Only consider the PCM after everything else is ruled out.