The P2067 code indicates that the engine control module has detected a voltage signal from the Fuel Level Sensor B circuit that is lower than the normal operating range. This typically suggests a short to ground or a failure within the sensor's resistive element.
The resistive element or float mechanism in the sending unit has failed or worn out, creating a low-voltage signal.
The signal wire between the fuel tank and the control module is chafed or damaged, causing the signal to ground.
Moisture or corrosion at the fuel pump wiring harness connector increases resistance or creates a partial short.
Debris or sediment in the tank may be obstructing the float, causing it to sit at a position that mimics a low voltage state.
An internal failure in the control module's processing circuit for the fuel level input.
No, P2067 only affects the reporting of the fuel level and does not impact the fuel pump's ability to deliver fuel to the engine.
Not necessarily, as some vehicles allow for the replacement of just the sending unit, though many modern pumps are sold as a single integrated assembly.
No. It is extremely rare for the PCM to be the cause of a circuit low code; the issue is almost always located in the sensor or the wiring.