P1155high severityPowertrain
Electronic Throttle System Malfunction Secondary
on 2016 Hyundai Tucson 2.5L I4 · AWD
What this code means
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.
Other Powertrain codes on this vehicle
P0001
Fuel Volume Regulator Control Circuit/Open
P0002
Fuel Volume Regulator Control Circuit Range/Performance
P0003
Fuel Volume Regulator Control Circuit Low
P0004
Fuel Volume Regulator Control Circuit High
P0010
Intake Camshaft Position Actuator Circuit/Open Bank 1
P0011
Intake Camshaft Position Timing Over-Advanced Bank 1
P0012
Intake Camshaft Position Timing Over-Retarded Bank 1
P0013
Exhaust Camshaft Position Actuator Circuit/Open Bank 1
P0014
Exhaust Camshaft Position Timing Over-Advanced Bank 1
P0015
Exhaust Camshaft Position Timing Over-Retarded Bank 1