P1124high severityPowertrain
Throttle Unit Faulty Signal
on 2010 Volvo XC90 4.4L V8 · AWD
What this code means
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.
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