The engine computer has detected that the voltage signal from the second brake switch (Switch B) is higher than the expected operating range. This typically indicates an open circuit or a failure within the switch assembly.
The internal contacts of the switch have failed or worn out, causing an open circuit.
Frayed, broken, or pinched wires in the brake switch circuit causing a signal interruption.
Corrosion or loose fitment at the switch connector pins creating high resistance or an open circuit.
A broken plastic pedal stop may prevent the switch from being depressed correctly, altering the circuit state.
An internal fault in the powertrain control module's signal processing circuit.
No, the mechanical braking system operates independently of the electronic switches; however, electronic safety features like cruise control may be disabled.
Many vehicles use redundant switches to ensure that critical systems, such as the shift interlock and cruise control, have a fail-safe method of detecting brake application.
No. P0724 is almost always caused by a failed switch or wiring issue. Replacing the PCM without first verifying the integrity of the switch and wiring is usually incorrect.