P280A

Transmission Range Sensor A Circuit Not Learned

Severity

⚠️ Medium

Can you drive?

Do not drive — repair immediately

Approx. repair cost

$17–56 (est.)

Symptoms

Incorrect gear shifting
Check Engine light comes on
The gearbox goes into emergency mode
Difficulty starting the engine
Inability to change gears

Causes

Gear range sensor A fault
Damage to the sensor wiring harness
Poor contact in sensor connectors
Problems with the transmission control unit
The sensor training procedure has not been completed

How to Fix

Check the condition of the gear range sensor A
Inspect the sensor wiring harness and connectors
Check the voltage and resistance of the sensor circuit
Perform the sensor training procedure using diagnostic equipment
If necessary, replace the sensor or repair the wiring

Related codes

P280B P280C P0705