P0A58 code meaning
Drive Motor B Current Sensor Circuit High
Powertrain system Generic code P0Axx codes Check engine light
What P0A58 means
P0A58 reports that the output of the drive motor B current sensor sits above its valid range, for instance from an open sensor ground, a short to the sensor supply or an internal fault that saturates the output. No manufacturer documents P0A58 publicly. Patents from Toyota and Hyundai show how motor controllers judge their current sensors: against fixed electrical limits, by comparing a control with a monitoring sensor, and by checking the zero-current offset. A reading pinned high would make the controller withdraw torque or trip overcurrent protection although nothing is wrong in the motor. CARB requires out-of-range checks for hybrid input components. P0A57 is the low side, P0A55 the general circuit fault, P0A56 plausibility, P0A54 the motor A equivalent.
P0A58 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 P0A58
- Hybrid warning and MIL
- Drive motor B disabled, reduced power
Common causes of P0A58
- Most likelySensor ground open or high resistance
- PossibleSignal line shorted to the sensor supply
- PossibleCurrent sensor with saturated output
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Drive motor b current sensorWiring harnessHybrid control module
What each part of P0A58 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. |
| 58 | The exact fault in that area. |
What to do next
- Note P0A58 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 P0A58
What does P0A58 mean?
P0A58 means "Drive Motor B Current Sensor Circuit High". P0A58 reports that the output of the drive motor B current sensor sits above its valid range, for instance from an open sensor ground, a short to the sensor supply or an internal fault that saturates the output. It is a generic code, so it means the same on every make.
Is it safe to drive with P0A58?
Drive gently and only to a workshop. With P0A58 the car can go into limp mode (reduced power) to protect itself.
Will P0A58 fail an emissions test?
Yes, it can. P0A58 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 P0A58 to fix?
Difficulty: workshop only. A typical repair takes 1 to 6 hours of work. This is a job for a workshop.
Will P0A58 clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.