Powertrain
generic / SAE
P0047
Turbocharger/Supercharger Boost Control A Circuit Low
Boost control circuit A voltage below expected range — short to ground or low-resistance fault in solenoid wiring.
SystemPowertrain
Typegeneric / SAE
GroupP0
Range / number– / 47
Possible causes
- Wiring shorted to ground high
- Connector pins corroded - high contact resistance low
- Harness chafing through insulation low
Symptoms
- Charge status indicator shows fault
- Charging may not start or interrupts
- Slower-than-expected charge rate
Inspection / repair
- Difficulty: medium
- DIY: possible
- Estimated cost: 80–600 €
- Estimated time: 0.5–3 h
- Component: boost control solenoid
- Component: actuator wiring
- MIL / check engine light
- emissions-relevant
- drive cycle required
- limp mode possible
Sources
References
sae:J2012