Throttle Unit Faulty Signal
2003-2014 Volvo XC90 3.2L I6
Description
The ECM detected a faulty signal from the electronic throttle body unit. The throttle position signal is erratic, intermittent, or outside the expected voltage range.
Symptoms
- Check Engine Light
- Reduced power mode
- Erratic idle
- Poor throttle response
- ETC warning light
Common Causes
- Faulty throttle body unit
- Carbon buildup on throttle plate affecting sensor
- Damaged wiring to throttle body
- Corroded throttle body connector
- ECM throttle input fault
Diagnostic Steps
- Read throttle position values with VIDA/DiCE
- Inspect throttle body connector
- Clean throttle body
- Test throttle body wiring
- Perform throttle body adaptation
Repair Notes
Clean the throttle body and perform adaptation; replace if signal remains faulty.
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
P1124 on Other Vehicles
Common Questions
What does code P1124 mean on a 2003-2014 Volvo XC90?
P1124 stands for "Throttle Unit Faulty Signal". The ECM detected a faulty signal from the electronic throttle body unit. The throttle position signal is erratic, intermittent, or outside the expected voltage range.
What are the symptoms of P1124 on a Volvo XC90?
Common symptoms of P1124 include: Check Engine Light, Reduced power mode, Erratic idle, Poor throttle response, ETC warning light.
What causes P1124 on a 2003-2014 Volvo XC90?
Common causes of P1124 include: Faulty throttle body unit, Carbon buildup on throttle plate affecting sensor, Damaged wiring to throttle body, Corroded throttle body connector, ECM throttle input fault.