ETS/ECM Communication Malfunction
2015-2021 Kia Sedona 3.3L V6
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
- P0001Fuel Volume Regulator Control Circuit/Open
- P0002Fuel Volume Regulator Control Circuit Range/Performance
- P0003Fuel Volume Regulator Control Circuit Low
- P0004Fuel Volume Regulator Control Circuit High
- P0010Intake Camshaft Position Actuator Circuit/Open Bank 1
- P0011Intake Camshaft Position Timing Over-Advanced Bank 1
- P0012Intake Camshaft Position Timing Over-Retarded Bank 1
- P0013Exhaust Camshaft Position Actuator Circuit/Open Bank 1
- P0014Exhaust Camshaft Position Timing Over-Advanced Bank 1
- P0015Exhaust Camshaft Position Timing Over-Retarded Bank 1
P1608 on Other Vehicles
Common Questions
What does code P1608 mean on a 2015-2021 Kia Sedona?
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 Sedona?
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 2015-2021 Kia Sedona?
Common causes of P1608 include: Critical CAN bus failure, PCM internal failure, ETC module failure, Wiring harness severe damage, Main connector corrosion or disconnection.