AT/MT Codification Signal Not Plausible
2017-2022 Kia Niro EV Electric
Description
The PCM has received a transmission codification signal that does not match the expected transmission type. The signal indicating whether an automatic or manual transmission is installed is incorrect or missing.
Symptoms
- Check Engine Light
- Transmission may enter limp mode
- Incorrect shift patterns
- Engine performance may be limited
Common Causes
- Incorrect PCM software for transmission type
- Wiring issue in transmission codification circuit
- Aftermarket transmission swap without PCM recoding
- PCM connector issue
- TCM programming mismatch
Diagnostic Steps
- Verify PCM software matches installed transmission type
- Check transmission codification wiring
- Inspect PCM and TCM connectors
- Verify correct PCM part number for vehicle configuration
- Reprogram PCM if needed
Repair Notes
Reprogram the PCM with the correct transmission configuration software.
Related Codes
Other Powertrain Codes
- P0070Ambient Air Temperature Sensor Circuit
- P0071Ambient Air Temperature Sensor Range/Performance
- P0072Ambient Air Temperature Sensor Circuit Low
- P0073Ambient Air Temperature Sensor Circuit High
- P0115Engine Coolant Temperature (ECT) Sensor 1 Circuit
- P0116ECT Sensor 1 Circuit Range/Performance
- P0117ECT Sensor 1 Circuit Low Input
- P0118ECT Sensor 1 Circuit High Input
- P0119ECT Sensor 1 Circuit Intermittent
- P0125Insufficient Coolant Temperature for Closed Loop Fuel Control
P1586 on Other Vehicles
Common Questions
What does code P1586 mean on a 2017-2022 Kia Niro EV?
P1586 stands for "AT/MT Codification Signal Not Plausible". The PCM has received a transmission codification signal that does not match the expected transmission type. The signal indicating whether an automatic or manual transmission is installed is incorrect or missing.
What are the symptoms of P1586 on a Kia Niro EV?
Common symptoms of P1586 include: Check Engine Light, Transmission may enter limp mode, Incorrect shift patterns, Engine performance may be limited.
What causes P1586 on a 2017-2022 Kia Niro EV?
Common causes of P1586 include: Incorrect PCM software for transmission type, Wiring issue in transmission codification circuit, Aftermarket transmission swap without PCM recoding, PCM connector issue, TCM programming mismatch.