P0B58 code meaning
Hybrid/EV Battery Voltage Sense F Circuit Intermittent/Erratic
Powertrain system Generic code P0Bxx codes Check engine light
What P0B58 means
P0B58 is reserved for an erratic signal on cell sense channel F, and the honest state is short: no manufacturer documents this code publicly. The neighbouring codes are well covered; Ford and GM use the open circuit code P0B54, GM and Chrysler the range code P0B55, GM the fixed low and high limits. CARB demands monitoring of all battery voltage sensors of the storage system. An erratic test would catch sudden steps between successive samples that stay inside the low and high limits. Likely causes are a sense tap that loosens under vibration or a damaged section of the flexible circuit, and the symptoms typically come and go with road conditions and temperature.
P0B58 at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modePossible
- Repair difficultyWorkshop only
- Typical labor0.5 to 8 hours
- Clears after repairWhen cleared with a scanner
Symptoms of P0B58
- Sporadic warning depending on road or temperature
- Occasional brief power reduction
Common causes of P0B58
- Most likelySense tap of channel F loosening under vibration
- PossibleDamaged section of the flexible sense circuit
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Hv battery voltage sense fWiring harnessBms
What each part of P0B58 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. |
| 58 | The exact fault in that area. |
What to do next
- Note P0B58 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 P0B58
What does P0B58 mean?
P0B58 means "Hybrid/EV Battery Voltage Sense F Circuit Intermittent/Erratic". P0B58 is reserved for an erratic signal on cell sense channel F, and the honest state is short: no manufacturer documents this code publicly. It is a generic code, so it means the same on every make.
Is it safe to drive with P0B58?
Drive gently and only to a workshop. With P0B58 the car can go into limp mode (reduced power) to protect itself.
Will P0B58 fail an emissions test?
Yes, it can. P0B58 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 P0B58 to fix?
Difficulty: workshop only. A typical repair takes 0.5 to 8 hours of work. This is a job for a workshop.
Will P0B58 clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.