What P2802 means
Voltage on the range sensor B signal line is below the expected window.
How the engine computer detects it
Wire shorted to ground or sensor internal short.
Written from public technical sources and not yet checked by a mechanic. How we write these pages
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
- Signal wire shorted to ground Most likely
- Internal sensor short Possible
- Connector pins corroded - high contact resistance Less likely
How to diagnose P2802
- Read every stored code with an OBD-II scanner. If misfire or fuel trim codes are there too, fix those first: they often cause this one.
- Inspect the parts involved: transmission range sensor b, wiring harness, tcm.
- Work through the causes above from most to least likely, cheapest checks first.
- Clear the code and drive a full drive cycle to confirm the repair held.
Reading the code
- P
- Powertrain
- 2
- Generic (SAE) code
- 802
- Specific fault
Questions drivers ask
Can I drive with code P2802?
If the car shifts normally, drive gently to a shop. If it's stuck in one gear, slips, shifts harshly or won't move out of Park, don't drive it: have it towed.
This page is general information, not a substitute for a professional diagnosis. Repair costs are rough estimates for parts and labor and vary by vehicle and region.