P006F: Turbocharger/Supercharger Boost Control A Supply Voltage Circuit High
Reduced engine power and possible limp mode due to improper boost control
Overview
P006F indicates a high voltage condition in the turbocharger or supercharger boost control 'A' supply voltage circuit, often caused by electrical or actuator faults affecting forced induction boost regulation.
Common Symptoms
- Check Engine Light illumination
- Reduced or erratic engine power
- Decreased throttle response
- Potential limp/reduced power mode
- Poor fuel economy
Most Common Causes
Electronic actuator may fail internally or present high voltage readings
Common cause due to exposure to heat and environment
Voltage reference issues can present high circuit readings
Considered rare and usually after ruling out wiring and components
Diagnostic Steps
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Use an OBD-II scanner to confirm P006F and check for related codesExpected: Code P006F present with possible related boost control codesInterpretation: Confirms circuit high voltage condition
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Visually inspect wiring and connectors to the boost control solenoid/actuatorExpected: Look for damage, corrosion, loose or melted insulationInterpretation: Damage would indicate likely electrical cause
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Measure circuit voltage at the boost control actuator compared to OEM specsExpected: Voltage within specified rangeInterpretation: High reading confirms circuit supply issue
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Check PCM power supply and ground referenceExpected: Stable reference and groundsInterpretation: Faulty reference may cause false high voltage reading
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Replace suspect actuator/solenoid and clear codesExpected: Code should not return with correct componentInterpretation: Indicates actuator/solenoid was root cause
Repair Solutions
Costs vary widely by make/model and part pricing
Depends on extent of wiring damage
May require professional diagnostic and soldering
Only if confirmed faulty after all other diagnostics
Common Misdiagnoses
Avoid these common diagnostic mistakes:
- Faulty turbocharger unit instead of boost control circuit issue
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