Electronic Throttle System Malfunction Secondary
2017-2022 Kia Niro EV Electric
Description
The PCM has detected a secondary or redundant fault in the Electronic Throttle System. This indicates multiple ETC faults have been detected, causing the system to enter a more restrictive failsafe mode.
Symptoms
- Check Engine Light
- Severe power limitation
- Engine may only idle
- ETC warning light
- No throttle response above idle
Common Causes
- Multiple ETC component failures
- Throttle body and pedal sensor disagreement
- Critical wiring damage in ETC circuit
- PCM ETC control module failure
- Water intrusion in ETC connectors
Diagnostic Steps
- Check for all ETC-related codes and diagnose each
- Inspect all ETC wiring and connectors for damage or water intrusion
- Test throttle body and accelerator pedal sensors
- Verify PCM ETC outputs
- Clear codes and retest after repairs
Repair Notes
Diagnose and repair all ETC faults; this code sets when the system detects multiple concurrent issues.
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
P1155 on Other Vehicles
Common Questions
What does code P1155 mean on a 2017-2022 Kia Niro EV?
P1155 stands for "Electronic Throttle System Malfunction Secondary". The PCM has detected a secondary or redundant fault in the Electronic Throttle System. This indicates multiple ETC faults have been detected, causing the system to enter a more restrictive failsafe mode.
What are the symptoms of P1155 on a Kia Niro EV?
Common symptoms of P1155 include: Check Engine Light, Severe power limitation, Engine may only idle, ETC warning light, No throttle response above idle.
What causes P1155 on a 2017-2022 Kia Niro EV?
Common causes of P1155 include: Multiple ETC component failures, Throttle body and pedal sensor disagreement, Critical wiring damage in ETC circuit, PCM ETC control module failure, Water intrusion in ETC connectors.