P0B0D code meaning
Electric/Auxiliary Transmission Fluid Pump Motor Control Module
Powertrain system Generic code P0Bxx codes Check engine light
What P0B0D means
P0B0D is an internal fault of the module that drives the auxiliary pump motor. GM documents it for the auxiliary transmission pump controller (ATPC) in its 2011 and 2014 hybrid tables and for the 2016 Cadillac ELR: it checks processor integrity, such as SPI hardware faults or a wrong seed and key between processors, with more than 9.5 V supply; 28 failures out of 32 samples in a 6.25 ms loop, detected within about 200 ms, set a Type A fault. Stellantis lists P0B0D-00 on the 2021-25 Jeep Wrangler 4xe and 2022-25 Grand Cherokee 4xe with the 8P75PH plug-in transmission (TSB 21-038-25, revised 21-041-26): MIL and limp mode, sometimes with U0287; the fix is a new in-pan electric pump. U0287 is lost communication with the pump module, P0C23 to P0C25 its circuit.
P0B0D at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modePossible
- Repair difficultyHard
- Typical labor1.5 to 4 hours
- Clears after repairWhen cleared with a scanner
Symptoms of P0B0D
- MIL on
- Transmission in limp mode
- Possibly lost communication with the pump module (U0287)
Common causes of P0B0D
- Most likelyElectric pump with integrated control electronics failed (Jeep 4xe 8P75PH)
- PossibleProcessor or memory fault inside the pump control module
- Less likelySupply voltage dips or poor ground at the module
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Aux trans pump control module
What each part of P0B0D 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. |
| 0D | The exact fault in that area. |
What to do next
- Note P0B0D 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 P0B0D
What does P0B0D mean?
P0B0D means "Electric/Auxiliary Transmission Fluid Pump Motor Control Module". P0B0D is an internal fault of the module that drives the auxiliary pump motor. It is a generic code, so it means the same on every make.
Is it safe to drive with P0B0D?
Drive gently and only to a workshop. With P0B0D the car can go into limp mode (reduced power) to protect itself.
Will P0B0D fail an emissions test?
Yes, it can. P0B0D 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 P0B0D to fix?
Difficulty: hard. A typical repair takes 1.5 to 4 hours of work. This is a job for a workshop.
Will P0B0D clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.