P1586
MT/AT Encoding Signal Malfunction
Severity
⚠️ MediumCan you drive?
Yes, but get it checked soon
Approx. repair cost
$17–89 (est.)
Symptoms
- Incorrect gear shifting
- Transmission of the gearbox into emergency mode
- Check Engine light comes on
- Reduced engine power
- Problems starting the engine
Causes
- Transmission position sensor malfunction
- Transmission wiring harness damage
- Problems with the transmission control unit
- Engine control unit (ECU) malfunction
- Short circuit or open circuit in the encoding signal circuit
How to Fix
- Check the condition of the transmission wiring harness
- Check the gearbox position sensor
- Check transmission control unit
- Check engine control unit (ECU)
- Diagnose the encoding signal circuit