P0B0D: Electric/Auxiliary Transmission Fluid Pump Motor Control Module

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.

Medium severity. Can I keep driving?It depends on the symptoms. If the car is running normally you can go to a repair shop; if it goes into limp mode, drive as little as possible.

Symptoms

MIL on
Transmission in limp mode
Possibly lost communication with the pump module (U0287)

Most likely causes

Electric pump with integrated control electronics failed (Jeep 4xe 8P75PH)
Processor or memory fault inside the pump control module
Supply voltage dips or poor ground at the module

What to check, in order

Start with the simplest. You can tick off each step.

Check the battery and grounds
Clear the code and see if it returns
If it is a reference voltage code, disconnect sensors one at a time and see if the voltage recovers
Check whether a software update is available
Do not replace the control module without a full diagnosis

Good to know

Repair difficulty: hard
It can trigger limp mode.
It affects emissions.

What each character of P0B0D means

P: Powertrain: engine and transmission
0: Generic code: same on every make
B: Subsystem depends on the code range
0D: Specific fault in that system

Frequently asked questions

Can I keep driving with code P0B0D?

It depends on the symptoms. If the car is running normally you can go to a repair shop; if it goes into limp mode, drive as little as possible.

What causes code P0B0D?

The most common causes are: electric pump with integrated control electronics failed (Jeep 4xe 8P75PH); processor or memory fault inside the pump control module; supply voltage dips or poor ground at the module.

Related codes

Sources

Values and procedures vary by manufacturer. If it affects brakes, steering, fuel or high voltage, see a professional. Updated: 2026-11-04. How we build these pages.