P0B50 code meaning
Hybrid/EV Battery Voltage Sense E Circuit Range/Performance
Powertrain system Generic code P0Bxx codes Check engine light
What P0B50 means
On the 2020 Chrysler Pacifica plug-in hybrid P0B50 is called Voltage Sense 5 Circuit Performance and rarely comes alone: the FCA bulletin lists it with the other sense channels, contactor stuck codes, a long precharge time and wake-up circuit faults, all cured by updating the battery pack control module. Some owners also notice that scheduled charging fails because the pack does not wake up. GM defines the check precisely: channel E must change in step with the average cell voltage, and a stuck reading in 35 of 40 samples sets the code, Type A; the 2012 two-mode hybrids instead flag block 5 when 20 times its value differs from the pack voltage by over 70 V. Open, low and high faults are separate codes.
P0B50 at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modePossible
- Repair difficultyWorkshop only
- Typical labor0.2 to 8 hours
- Clears after repairWhen cleared with a scanner
Symptoms of P0B50
- MIL on
- Scheduled charging does not start
- Premature oil change or fuel refresh message (Pacifica)
Common causes of P0B50
- Most likelyBattery pack control module software, fixed by reflash (Chrysler Pacifica PHEV)
- PossibleChannel E reading frozen in the measuring chip
- Less likelyBlock voltage measurement drifting from pack voltage (GM two-mode)
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 eWiring harnessBms
What each part of P0B50 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. |
| 50 | The exact fault in that area. |
What to do next
- Note P0B50 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 P0B50
What does P0B50 mean?
P0B50 means "Hybrid/EV Battery Voltage Sense E Circuit Range/Performance". On the 2020 Chrysler Pacifica plug-in hybrid P0B50 is called Voltage Sense 5 Circuit Performance and rarely comes alone: the FCA bulletin lists it with the other sense channels, contactor stuck codes, a long precharge time and wake-up circuit faults, all cured by updating the battery pack control module. It is a generic code, so it means the same on every make.
Is it safe to drive with P0B50?
Drive gently and only to a workshop. With P0B50 the car can go into limp mode (reduced power) to protect itself.
Will P0B50 fail an emissions test?
Yes, it can. P0B50 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 P0B50 to fix?
Difficulty: workshop only. A typical repair takes 0.2 to 8 hours of work. This is a job for a workshop.
Will P0B50 clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.