Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
DTC P1430 (40): Motor Drive Module (MDM) Short Circuit Sensor Problem: General Description
If the flag short circuit (FSC) signals from the motor power inverter (MPI) module do not vary from a low voltage level to a high voltage level within a set time after turning the ignition switch on, a malfunction is detected. The signals vary from a low voltage level to a high voltage level within a set time (t0) under normal conditions. If a problem occurs in the signal circuit, the signals stay at a low voltage level for a set time (t1) (t1>t0) after turning the ignition switch on, and the motor control module (MCM) detects a malfunction and stores a DTC.
| Execution | Once per driving cycle |
| Sequence | None |
| Duration | 0.5 seconds or more |
| DTC Type | One drive cycle, MIL ON, IMA system indicator ON |
| Condition | Minimum | Maximum |
|---|---|---|
| MCM power-supply voltage | 10.5 V | - |
| Ignition switch | ON | |
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.
When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
Rather have a pro handle this?
A certified mobile mechanic comes to your home or office. They bring the tools, you stay comfortable. No tow truck, no waiting room, no surprises.
No obligation. See pricing before you book.