P0B0D
Electric/Auxiliary Transmission Fluid Pump Motor Control Module
The auxiliary transmission fluid pump motor control module reports an internal fault. Pump cannot be commanded reliably.
- Check engine light: Yes
- Emissions related: No
- Repair difficulty: hard
Symptoms
- Check engine or transmission warning light on
- Harsh, delayed, or missing shifts
- Possible limp mode (locked in one gear)
- Slipping or shuddering during gear changes
Common causes
Ordered by how often each turns out to be the cause.
- Internal module faultCommon
- Communication lostPossible
Parts involved
- Aux Trans Pump Control Module
P0B0D is a generic OBD-II code defined by SAE J2012. Exact wording and diagnostic procedure vary by manufacturer and model. Code definitions are drawn from the public-domain OBDex dataset; the workshop notes are our own.