P0A32 code meaning
Drive Motor B Temperature Sensor Circuit Low
Powertrain system Generic code P0Axx codes Check engine light
What P0A32 means
P0A32 means the motor B temperature signal sits below its valid voltage range. GM uses an NTC thermistor, so a voltage near 0 V reads as an impossibly hot winding: the 2011 hybrid tables set it above 184 °C (Type A, one trip), the 2013 two-mode trucks above 230 °C (Type B, two trips). Mitsubishi sets it on the rear motor of the 2023 Outlander PHEV when the sensor voltage is 0.065 V or less for 0.5 s. A signal wire shorted to ground or a shorted thermistor is the typical cause. P0A33 is the opposite fault, P0A31 the plausibility check, and P0A35 a real over-temperature that GM only evaluates while no out-of-range fault is active. The system derates electric drive and warns the driver.
P0A32 at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modePossible
- Repair difficultyWorkshop only
- Typical labor1 to 6 hours
- Clears after repairWhen cleared with a scanner
Symptoms of P0A32
- Hybrid warning or check engine light
- Motor B temperature shows an extremely high fixed value
- Electric drive reduced or switched off
Common causes of P0A32
- Most likelySensor signal wire shorted to ground
- PossibleThermistor shorted inside the motor
- PossibleChafed harness between drive unit and motor control module
- Less likelyFaulty sensor input in the motor control module
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Drive motor b temp sensorWiring harnessHybrid control module
What each part of P0A32 means
| P | Powertrain system: engine, fuel system, ignition, emissions and transmission. |
| 0 | Generic code: it means the same on every make (SAE standard). |
| A | Area: hybrid propulsion. |
| 32 | The exact fault in that area. |
What to do next
- Note P0A32 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 P0A32
What does P0A32 mean?
P0A32 means "Drive Motor B Temperature Sensor Circuit Low". P0A32 means the motor B temperature signal sits below its valid voltage range. It is a generic code, so it means the same on every make.
Is it safe to drive with P0A32?
Drive gently and only to a workshop. With P0A32 the car can go into limp mode (reduced power) to protect itself.
Will P0A32 fail an emissions test?
Yes, it can. P0A32 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 P0A32 to fix?
Difficulty: workshop only. A typical repair takes 1 to 6 hours of work. This is a job for a workshop.
Will P0A32 clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.