Powertrain
Definition only
Lights the check engine lamp
P2801: Transmission Range Sensor B Circuit Range/Performance
Standardized SAE J2012 code · P28xx codes
What does P2801 mean?
Range sensor B reports a position that does not match other plausibility checks. Mechanical alignment off or sensor contacts intermittent.
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 Sensor mechanically misadjusted
- Medium Contacts dirty or oxidised
- Low Sensor element aged beyond calibration window
Likelihood is a general estimate across vehicles; your make and model may differ.
Add your car to see reports of P2801 on the same make and model first.
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