01 Why Buying A New Model Car In Its First Year Could Be Your … • 02 How Long Can an Engine Run Without Coolant? • 03 Understanding the Differences Between SAE and Metric Sockets • 04 Camshaft Position Sensor: Everything You Need to Know • 05 P0071 Code: Ambient Air Temperature Sensor Range or Perform… • 06 The Science Behind ATF: How it Works and Why It Matters • 07 Why Jet Engines Burn Less Fuel at Higher Altitudes • 08 The EV Owner Who Charged For 100,000 Miles Tells Us What Th… • 09 P0100 Code: Troubleshooting and Repair Guide for Mass Air F… • 10 How to Keep Passengers Safe in the Event of a Crash: Aviati… •

DTC codes / P28xx · Transmission / P2804

P2804Transmission Range Sensor B Circuit Intermittent

P2804 indicates that the transmission control module (TCM) has detected an intermittent fault in the signal circuit for Transmission Range Sensor B, which is often the output speed or range confirmation sensor inside the transmission. The TCM sets this code when the sensor signal drops out or becomes erratic for a brief period, even if the fault does not persist long enough to trigger a hard failure.

SystemPowertrain
Code typeGeneric (all makes)
SeverityMedium
Fix difficultyIntermediate
AreaTransmission

Guidance is general and written for all OBD-II vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.

Running on fumes Free guides aren't free to make. Top up the tank. Any amount, one time. Fuel the Garage