Throttle Actuator Control System Forced Idle
2012-2019 Fiat 500 1.4L I4
Description
ECM has forced the engine to idle speed only due to a detected throttle control fault.
Symptoms
- Engine stuck at idle
- Check engine light
- Vehicle barely moves
- Traction control light on
Common Causes
- Throttle body failure
- APP sensor fault
- Wiring issue
- ECM detected conflicting throttle signals
Diagnostic Steps
- Scan for other DTCs
- Check APP sensor signals
- Inspect throttle body
- Clear codes and test
Repair Notes
Diagnose root cause from accompanying DTCs. This is a protective measure.
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
P2104 on Other Vehicles
Fiat 124 Spider
2017-2020 1.4L I4 Turbo
Fiat 126p Maluch
1973-2000 0.65L I2 Air-Cooled
Fiat 126p Maluch
1987-2000 0.7L I2 Air-Cooled
Fiat 500 Abarth
2012-2019 1.4L I4 Turbo
Fiat 500 BR
2011-2020 1.4L I4 Flex Fire Evo
Fiat 500 PL
2007-2025 1.0L I3 Hybrid FireFly 70
Fiat 500 PL
2007-2025 1.2L I4 Fire 69
Fiat 500 PL
2020-2025 Electric 42kWh
Common Questions
What does code P2104 mean on a 2012-2019 Fiat 500?
P2104 stands for "Throttle Actuator Control System Forced Idle". ECM has forced the engine to idle speed only due to a detected throttle control fault.
What are the symptoms of P2104 on a Fiat 500?
Common symptoms of P2104 include: Engine stuck at idle, Check engine light, Vehicle barely moves, Traction control light on.
What causes P2104 on a 2012-2019 Fiat 500?
Common causes of P2104 include: Throttle body failure, APP sensor fault, Wiring issue, ECM detected conflicting throttle signals.