Powertrain
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Lights the check engine lamp
P276A: Electric/Auxiliary Transmission Fluid Pump B Motor Supply Voltage Circuit / Open
Standardized SAE J2012 code · P27xx — Transmission
What does P276A mean?
The motor supply line of the second electric or auxiliary transmission fluid pump is open. Pump cannot run, hydraulic pressure is lost during stop-start engine-off events.
The code tells you which monitor failed, not which part is broken. Test before replacing parts.
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
- High Blown fuse on supply line
- Medium Broken supply wire
Likelihood is a general estimate across vehicles; your make and model may differ.
Add your car to see reports of P276A on the same make and model first.
P276A in the community
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