Powertrain
Definition only
Lights the check engine lamp
P2802: Transmission Range Sensor B Circuit Low
Standardized SAE J2012 code · P28xx codes
What does P2802 mean?
Voltage on the range sensor B signal line is below the expected window. Wire shorted to ground or sensor internal short.
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 Signal wire shorted to ground
- Medium Internal sensor short
- 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 P2802 on the same make and model first.
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