Powertrain
Definition only
Lights the check engine lamp
P276C: Electric/Auxiliary Transmission Fluid Pump B Motor Supply Voltage Circuit High
Standardized SAE J2012 code · P27xx — Transmission
What does P276C mean?
The motor supply voltage of the second auxiliary transmission fluid pump is above the operating range.
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 Alternator regulator failed to limit output
- Low Wiring shorted to a higher-voltage circuit
- Low Connector pins corroded - high contact resistance
Likelihood is a general estimate across vehicles; your make and model may differ.
Add your car to see reports of P276C on the same make and model first.
P276C in the community
Ask about P276CNo one has posted about P276C yet
Share your vehicle, the tool you used and what you tested — the first thread helps everyone who searches for this code.
Describe your P276C problem