Powertrain
generic / SAE
P004F
Turbocharger/Supercharger Boost Control B Circuit Intermittent/Erratic
Same intermittent fault pattern as P004E on boost control B. Boost control tracks commanded vs. actual manifold pressure; persistent deviation means wastegate, vanes, hose or actuator are not delivering the requested pressure.
SystemPowertrain
Typegeneric / SAE
GroupP0
Range / number– / 4F
Possible causes
- Connector loose or corroded high
- Connector with intermittent contact under vibration low
- Harness routed against vibrating component 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: 50–500 €
- Estimated time: 0.5–3 h
- Component: boost control solenoid b
- Component: connector
- MIL / check engine light
- emissions-relevant
- drive cycle required
Sources
References
sae:J2012