P0BD5 code meaning
Drive Motor Inverter Temperature Sensor C Circuit Intermittent/Erratic
Powertrain system Generic code P0Bxx codes Check engine light
What P0BD5 means
P0BD5 is meant for an inverter temperature sensor C signal that jumps or drops out for short moments. Because the heat sink of a liquid-cooled inverter changes temperature smoothly, sudden steps point to a contact fault or to interference; a Hitachi patent explains that the small thermistor signal can pick up noise from the high-voltage main circuit. No manufacturer documents this exact code publicly; GM covers its sensor C, the phase V sensor of the motor A inverter, only with P0BD2, P0BD3 and P0BD4. CARB requires hybrid sensor inputs to be monitored for erratic faults too. Freeze-frame data and a careful check of the inverter connector are the best starting points.
P0BD5 at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modePossible
- Repair difficultyWorkshop only
- Typical labor1 to 6 hours
- Clears after repairAfter a drive cycle
Symptoms of P0BD5
- Warning lamp that comes and goes
- Brief power reductions while driving
- Jumping inverter temperature in live data
Common causes of P0BD5
- Most likelyLoose or corroded contact at the inverter module
- PossibleIntermittent fault inside the power inverter module
- Less likelyInterference from the high-voltage circuit on the sensor signal
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Drive motor inverter temp sensor cWiring harnessHybrid control module
What each part of P0BD5 means
| P | Powertrain system: engine, fuel system, ignition, emissions and transmission. |
| 0 | Generic code: it means the same on every make (SAE standard). |
| B | Area: hybrid propulsion. |
| D5 | The exact fault in that area. |
What to do next
- Note P0BD5 and any other codes stored with it: several codes together often point to one cause.
- Check for loose connectors and damaged wiring around the parts the code names.
- Check open recalls for your car: some faults are fixed for free by the dealer. Enter your VIN.
- Clear the code only after the repair. If it comes back, the fault is still there.
Buying a used car? Scan it for stored codes before you pay. A recently cleared memory can hide a problem.
Questions about P0BD5
What does P0BD5 mean?
P0BD5 means "Drive Motor Inverter Temperature Sensor C Circuit Intermittent/Erratic". P0BD5 is meant for an inverter temperature sensor C signal that jumps or drops out for short moments. It is a generic code, so it means the same on every make.
Is it safe to drive with P0BD5?
Drive gently and only to a workshop. With P0BD5 the car can go into limp mode (reduced power) to protect itself.
Will P0BD5 fail an emissions test?
Yes, it can. P0BD5 is emissions-related, so most inspection programs fail a car while it is stored or while the check engine light is on.
How hard is P0BD5 to fix?
Difficulty: workshop only. A typical repair takes 1 to 6 hours of work. This is a job for a workshop.
Will P0BD5 clear itself after the repair?
After the repair the car has to complete a drive cycle (a mix of city and highway driving) before the test runs again. Until then the readiness monitor shows "not ready", which can fail an inspection.