OBD-II code · Powertrain (generic, extended)
P2802 Transmission Range Sensor B Circuit Low
Voltage on the range sensor B signal line is below the expected window. Wire shorted to ground or sensor internal short.
Is it safe to drive with P2802?
The car may go into limp mode (reduced power). Get it diagnosed before a long trip.
Common causes
- Most likelySignal wire shorted to ground
- PossibleInternal sensor short
- Less likelyConnector pins corroded - high contact resistance
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
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Best left to a mechanic
- Typical labour
- 1–4 h
- Emissions test
- Usually unaffected
- Parts involved
- Transmission Range Sensor B, Wiring Harness, Tcm
Related codes
- P0707Transmission Range Sensor A Circuit Low
- P27F5Gear Shift Lock Solenoid/Actuator A Stuck Off
- P2800Transmission Range Sensor B Circuit (PRNDL Input)
- P2801Transmission Range Sensor B Circuit Range/Performance
- P2803Transmission Range Sensor B Circuit High
- P2804Transmission Range Sensor B Circuit Intermittent
- P2805Transmission Range Sensor A/B Correlation
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.