ETS/ECM Communication Malfunction
2017-2022 Kia Niro EV Electric
Description
The PCM has detected a critical communication failure between the Electronic Throttle System controller and the Engine Control Module. This loss of communication prevents proper throttle control and forces an immediate failsafe.
Symptoms
- Check Engine Light
- Engine will not accelerate
- Idle only operation
- ETC warning light
- Vehicle may stall
Common Causes
- Critical CAN bus failure
- PCM internal failure
- ETC module failure
- Wiring harness severe damage
- Main connector corrosion or disconnection
Diagnostic Steps
- Check all main PCM and ETC connectors immediately
- Inspect CAN bus wiring for severe damage
- Test PCM power and ground circuits
- Attempt scan tool communication with all modules
- Check for water damage or rodent damage to wiring
Repair Notes
Repair critical wiring damage or replace the failed control module causing the communication loss.
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
P1608 on Other Vehicles
Common Questions
What does code P1608 mean on a 2017-2022 Kia Niro EV?
P1608 stands for "ETS/ECM Communication Malfunction". The PCM has detected a critical communication failure between the Electronic Throttle System controller and the Engine Control Module. This loss of communication prevents proper throttle control and forces an immediate failsafe.
What are the symptoms of P1608 on a Kia Niro EV?
Common symptoms of P1608 include: Check Engine Light, Engine will not accelerate, Idle only operation, ETC warning light, Vehicle may stall.
What causes P1608 on a 2017-2022 Kia Niro EV?
Common causes of P1608 include: Critical CAN bus failure, PCM internal failure, ETC module failure, Wiring harness severe damage, Main connector corrosion or disconnection.